I find that less impressive HD games in 2D look the best in 3D since they can really push the pixels. Super Stardust HD for example looks great. Also WipEout HD has fantastic 3D. Check out HD collections like SotC as well. Killzone 3 and Resistance 3 are on par with Uncharted's 3D. Be warned though that some games use fake 3D. They just render in 2D and use a depth map creating an ok effect. I've discovered this on the Assassin's Creed and Batman games. Interestingly enough if you want to see what I mean just check out Resistance 3's cutscenes in 3D because they are done this way.
Movie wise there are tons of great ones. Cloudy with a chance of meatballs (great movie too), Avatar, Prometheus, Titanic, Tron, Tintin, and Hugo are great for showing off 3D.
If you couldn't tell, I'm a 3D buff. Ask any question and I'll help.