Chemistry -- you can be the best filmmaker, writer or actor, but nothing makes up for a lack of that intangible connection between two people. This is probably why so many actors can't keep up long relationships -- they continually get paired up with people they have great chemistry with and are weakened by temptation over and over until they can't help but break the ties that bind and go libidinously nuts. Oh, the devilish temptation! But on the flip-side, there are pairings that are just plain crappy -- painfully free of that interest and attraction that comes from the eyes. The CBC has reported that British cinema advertisers Pearl and Dean recently conducted a survey asking 3,000 movie-goers which duos have the worst on-screen chemistry, and came up with a list of the 10 worst offenders.

The top spots are no big surprise, really -- the 5th went to Catherine Zeta Jones and Sean Connery in Entrapment, the 4th to Madonna and Adriano Giannini in Swept Away, Keira Knightley and Orlando Bloom got the third spot with the Pirates of the Caribbean trilogy, the runners up were the rockin' Bennifer pair for Gigli and the top spot went to Natalie Portman and Hayden Christensen with Episode II: Attack of the Clones. I'd say they're pretty spot on, although my top offender are the two that hold that third spot, and I'm glad I'm not the only one that thinks so. Granted, Johnny Depp can whip up some chemistry with almost anyone, which makes it hard to compete, but man, I hated Knightley and Bloom together. This also made many parts of the final film truly annoying, if you get my drift. Also, you've got to question your real-life couple choices when you can't cook up chemistry at work, with your significant other.

Finishing the list, there's Hugh Grant and Andie MacDowell in the 6-spot with Four Weddings and a Funeral, Ben Affleck appeared again at 7 with Kate Beckinsale for Pearl Harbor, Tom Cruise and Nicole Kidman got 8 with Eyes Wide Shut, Heath Ledger and Jake Gyllenhaal followed with Brokeback Mountain and Titanic got the final, 10th spot, with stars Kate Winslet and Leonardo DiCaprio. Who would you pick?