In Lolita, Ben plays the part of the young Humbert Humbert.

However, he's not in it for *very* long. I timed it to precisely 1 minute and 5 seconds. In fact, his role is over before the titles are finished, so if you were still queuing for your popcorn, you'd have missed the best 1 minute and 5 seconds of the movie!

Ok, so even if Ben doesn't appear in Lolita for a whole lot of time, boy does he look great.

The young Humbert Humbert scenes are there to establish were the grown-up Humbert (played by Jeremy Irons, and lead character in the movie), developed his taste for young girls.