School Of Rock. Which is funny, 'cause I thought it was only okay the first time I saw it. But, then, I rewatched it; totally grew on me. And, now, I own it. And watch it whenever I need a good laugh. I'm also pretty fond of his part in The Holiday [him and Kate Winslet are so darling together] and Orange Country [he's the best, most hilarious, thing about this movie].