We've already heard enough stars insisting that those sex scenes we find either major turn-ons (Mickey Rourke force-feeding Kim Basinger strawberries on the kitchen floor in 9 1/2 Weeks) or majorly eye-scarring (Heather Graham faking her way through grainy limo thrusts in Boogie Nights) are totally perfunctory while filming. With the massive crew surrounding them, the sudden lighting checks, and simple fact that they've gotta feign spontaneous heat take after take, we've leaned towards taking their word for it. And as it turns out, no matter how big the star or legendary their prowess in the bedroom, even simple kissing scenes with the most gorgeous A-listers around range from "awkward and sweaty" to "slightly icky and sort of wet." Where Tom Cruise, Angelina Jolie, Harrison Ford, Leonardo DiCaprio and more rank on the list of Worst On-Screen Kissers after the jump.