Zoe Saldana, Guardians of the Galaxy, Letterman, The Late Show, Green Makeup
If you're like us and value your sleep, you probably nodded off into your Ambien dreamland before the party started on post-prime time TV. Don't worry; we've got you covered. Here's the best of what happened last night on late night.

"Guardians of the Galaxy" star Zoe Saldana stopped by "The Late Show," where she chatted with host David Letterman about her penchant for playing oddly-colored characters on the big screen. But while her blue skin tone was digitally added in "Avatar," Saldana said Gamora's green hue was "old school," and took five hours in a makeup chair to achieve -- with some nasty results. "The things that were coming out of my nose, my mouth, my...." she trailed off, to the audience's delight. "There was green everywhere."

Saldana and Letterman also discussed the merits of 3D, and while the host loved the use of the technology on "Guardians," the actress admitted that she's not a big fan of 3D films, because the effects always dupe her. "I'm that one person who's always dodging, acting like I've never been to a theater before," Saldana said. She also shared a clip from the film with Letterman, though like co-star John C. Reilly before her, Saldana's segment looked shockingly simplistic.

Heidi Klum visited "The Tonight Show" to goof off with host Jimmy Fallon in the latest installment of This is How We Roll, in which the pair rolled around on the floor together. While they did an impressive forward circular roll holding each other's ankles, Klum wasn't satisfied, demanding that they lay back down on top of each other, face to face, for what she dubbed a "German roll."

Over on "Jimmy Kimmel Live," host Jimmy Kimmel discussed the Library of Congress's recent release of the love letters that President Warren G. Harding sent to his mistress, Carrie Fulton Phillips. Kimmel explained that the letters were quite explicit, including multiple references to Harding's penis, and that he was going to read some on the show -- but asked hip hop star Warren G to read them instead. The results were pretty funny, with the musician reciting references to "fevered fondlings" and "matchless breasts," though the highlight of the clip was G's remark directed at Phillips: "You really got my boy wrecked, huh?"

Eric McCormack stopped by "Live" and recounted a story of his family's recent visit to Venice, Italy, and how their vocal wonderment at the beautiful surroundings got them scolded by not one, but two different people. The actor, who's Canadian, was incredulous. "We're not a loud people," he said. McCormack also brought a clip of what he claimed was a new sitcom, starring a familiar former character of his in a dual role. "It was a joy working with that cast," he quipped.

Actress Rosario Dawson also chatted with Kimmel about her recent trip to Comic-Con, and how she enjoys attending the event as a fan as well as a panelist. While Dawson marveled at how some attendees prepare their costumes -- and choreography of their complicated outfits -- for months leading up to the event, Kimmel was less impressed with that attention to detail. "It's an incredible waste of time," the host said.

On "Chelsea Lately," Kelsey Grammer discussed his wife's pregnancy, and how juggling their 2-year-old daughter, as well as Grammer's four kids from other relationships, was a challenge. The actor also chatted with host Chelsea Handler about his new show with Martin Lawrence, "Partners," which he said sprung from a fateful meeting with the comedian two years ago in which Grammer "fell in love" with Lawrence. "In a bi way," Grammer clarified.