But what did we learn on the set of the franchise's latest film, 'Harry Potter and the Deathly Hallows: Part I'? Let's just say we were spellbound by the things we encountered.
Moviefone recently visited the 'Deathly Hallows' set, where we talked to stars Daniel Radcliffe and Rupert Grint and director David Yates about the penultimate installment in the beloved series. Check out the 10 wicked things we learned from our magical visit.
1. The Actors Will Miss the 'Harry Potter' Series as Much as the Fans Will
During filming, Daniel Radcliffe admitted that 'Harry Potter's' big screen end date hasn't actually sunk in yet.
"I'm suddenly thinking, 'Oh God, I am only here for another three months, you know? Three or four months.' And so that's very odd. It will be very upsetting when it does come to an end, because I've spent so much time here and made some fantastic friends who I hope will stay with me for the rest of my life. In a way, it's a very definite closing of a certain chapter of your life."
Grint agreed: "It's weird, this one, because it doesn't feel like any of the others. You do feel like it's starting to come to an end. Yeah, I don't really know how it's going to feel on the last day when we never come back. I've never really imagined it ending."
2. Radcliffe Loves the Last Book's Controversial "Epilogue"
"The epilogue was something that I liked. I know not everybody did at all, but it was actually something I didn't have a problem with. And it's tying together all those loose ends," Radcliffe said. "Because the thing is, what people don't realize about the epilogue is, I think that if Jo Rowling hadn't written that epilogue, can you imagine being her for the rest of her life and having to cope with questions about what did Harry go on to do? She has to give something, to just I think to shut people up aside from everything else, you know, to give some conclusion."
Regarding the epilogue scene, Grint said, "It will be subtle, they're not going to go crazy." Then he joked: "I have some hair. And a very big forehead."
3. The Actors Definitely Have Their Own Favorite Scenes
For Radcliffe, he loved filming the "limbo" scenes with Albus Dumbledore, even though -- or because? -- he felt a lot of pressure to make them fantastic.
"For some reason on that scene on that day I was really ... I so wanted it to be good. I was probably trying almost too much too many different things," Radcliffe said. "But yeah, it was good. It was a really good scene and it's lovely having Gary [Oldman] back because there was some really, really nice moments in it but it was hard. It was really, really hard work but I suppose simply because of the expectations I placed on myself."
For Grint, it was the emotional scene where Ron loses his brother.
"That was quite a big scene with the whole Weasley family. It was a depressing scene to do because you've got Fred lying on the floor and it's quite shocking because it's a character we've associated with jokes and mucking about," Grint said. "It's quite horrible. There's been a lot of heavy, emotional scenes like that. ... it's satisfying. But it's quite haunting as well, because I'm not really used to it."
4. There's Plenty of Action in 'Part I'
"It's been really cool. ... It's really taken another level -- it's quite gory," Grint said. "I get splinched, which is disgusting. My arm kind of gets ripped open, and Fred loses an ear. It's really graphic, actually. We've done a lot already, all the battle stuff. Some of the scenes -- all the sets we've known for years like the Great Hall, they just get destroyed and become these burning wrecks. It's quite shocking to see these familiar places get destroyed, but the scenes are going to be really epic."
Yates said shooting all those action sequences was especially exciting.
"It feels very visceral," Yates said. "There are moments in this battle, which are very visceral and frightening and percussive I would say. Ultimately, the battle and the magical fighting is a counter point and that is where we differ from the book a little bit. I felt that in the book and the earlier drafts of the scripts before we worked them out, there was an opportunity to be counterpointing Harry's desperate race for the Horcrux with the Dark Lord's ever encroaching ability to kill everyone in the school, so there is this race against time."
5. ... and Plenty of Emotion!
For Harry, that means confronting Lord Voldemort for the final time.
"I mean, the whole series for me is about loss of innocence and about Harry going from this kind of wide-eyed child and turning into this slightly grizzled young man by the end of it," Radcliffe said. "Although as I was saying to people the other day, it is essential that he does not turn into a man necessarily in the film because what makes all that fight stuff at the end so powerful and so kind of horrible to watch is the fact that you're seeing a kid get beaten up by a very strong, very angry man."
For Ron, it means confronting his romantic feelings for his friend, Hermione.
"It sounds stupid, but I never really saw it coming. It has always been hinted, but I never thought to the extent where at the end, we're quite couple-y," Grint said. "The kiss has been done. I kind of built up this thing in my head. We were both kind of dreading it really, just because we've known each other since we were really small. It's like kissing your sister."
6. Shooting Two Movies Back-to-Back Was Crazy
"We started with the notion that wouldn't it be cool to have a cliffhanger, because certainly the films that I've made always have someone dying at the end of them," Yates said. "There is always a bereavement and I felt like we were getting into a cycle ever since Cedric Diggory [died at the end of the fourth film] and there was grief at the end. So I thought, let's try to break that cycle. But when I watched the movie it didn't feel as complete as I hoped it would so I'm looking again and I can't tell you yet because I'm still playing, but there is another moment that I think we'll end on, which is actually quite moving and fun."
7. Radcliffe Thinks About Death -- A Lot
"I don't know if it's maybe from playing Harry or ... I just think it's a natural thing that I have, I guess. It's something that I think about just because it's fascinating in a very alien kind of way because I've never ... I had one relative who passed away, but fortunately none others. So my sort of experience of it is quite limited, thankfully. But yeah, I've been in that scene yes, absolutely for that scene because you have to ... because when you're faced with death presumably that's all you can think about I suppose."
8. Opinions Differ About Filming the Movies in 3-D
Radcliffe said he doesn't "get" 3-D, though he has seen 3-D movies that he's enjoyed. "I think it's a long way to go before they replace actors," he said.
Meanwhile, Grint said he loves it and is happy that 'Part II' will be presented in 3-D.
"I'm a big fan of 3-D. I suppose it depends what kind of film you're watching, but I think it's going to add a lot," he said. "3-D really works with the big action stuff and things coming at you, and there will be a lot of that in this. It will be cool."
9. Some Scenes Have Been Changed -- or Added! -- From the Book to the Movie
"We've added a couple of sequences, which aren't in the book that I think raise the emotional stakes and the jeopardy stakes," Yates said. "So the process is always fraught with challenges, you want to try and keep the best of what Jo came up with, but you have to refine it and shape it. So we've lost things, I'm sure, that some of the fans will be frustrated by, but fortunately we've kept more than we've ever been able to keep in some of the other adaptations I've worked on."
"We've added a scene where after Ron is gone, Harry comes back to the Tent and finds Hermione listening to some Muggle music and they have this dance with each other, which is a very tender, awkward and emotional moment for the two of them because they've lost their friend, but also there is always that question. They have a very special friendship as characters and there is always that moment where you think could this trip beyond friendship to something else? It's a very naturalistic, charming moment and quite intriguing."
10. Radcliffe and Grint are Fine With Being Associated With 'Harry Potter' for the Rest of Their Careers
"I think it's very important that no matter where ... every opportunity I will get for the rest of my life, I would not have got if it wasn't for Harry Potter," Radcliffe said. "And it would be the height of ingratitude if I was ever anything but proud to be associated with these films ... we also have the knowledge that no matter what happens in the rest of our lives, no one will have had this particular experience other than the three of us. And I think that is something that will never, never leave us."
Grint agreed. "Yeah, it's become quite a big thing and I'm proud to be a part of it. I'm loving it."