"2012" - It was ok. It'll hold your interest, but once you've seen it, you can forget it and go on to something better. I'd rate it on par with "Indiana Jones and the Kingdom of the Crystal Skull."
"Precious" - This one can be quite depressing. If you're not afraid to look at the darker side of humanity, then go ahead an watch this one. Yes, good does win out, but this isn't "It's a Wonderful Life." Absolutely do NOT take the kids to this one.
"The Blind Side" - This one is uplifting. Sandra Bullock's character is unforgettable. You can take mom to see this one.