The Artist last year. It's just been released on DVD, though, so you can easily pick up this award-winning gem.
The Artist is that rarity among films - a risk-taker. Set during the tumultuous few years when film whipsawed from silents to "talkies," the film is a throwback to those days.* You have to pay attention to what's happening on the screen; you can't drop your eyes and expect the dialogue to carry you through, for there is no dialogue. Practically the entire film is silent, with a few title cards and a very few spoken words. (And this film is an excellent example of the power of having just a few words as opposed to lengthy speech after lengthy speech.) The entrancing story of pride, love, ambition, and innovation will catch you at the very beginning and keep a tight hold on you. The cast is marvelous and it's worth your time.
I'm not advocating for a return to silent films, but this one works. Give it a try.
*Yes, the magnificent Singin' in the Rain farmed this same ground, but in a very, very different way. See that one, too.