Knightley kisses, and tells who's best

Keira Knightley has kissed some serious heartthrobs, but her current leading man gets the gold star. "James [McAvoy] is the best kisser ever!" a giggling Knightley said of her "Atonement" co-star

The photogenic duo are in Venice for the film festival there. He's married, by the way. Knightley has kissed Johnny Depp and Orlando Bloom, but she dubbed McAvoy the best. He didn't rate her lip-lock, but did say: "I was blown away by Keira.

The amount of poise and grace she has is just incredible." In "Atonement," based on the Ian McEwan novel,

Knightley plays an upper-class beauty in love with the housekeeper's son, played by McAvoy.