I'd like to start a thread of what's worth (and not worth) going to or renting.
Good:
Soul Surfer - Wow, excellent movie
Hop - cute, the grown ups accompanying the kids would likely enjoy it too
Rio - cute, fun even for adults
Killers - really enjoyed this, have seen it two or three times
Knight and Day - also enjoyed, worth seeing
Unknown - good, but intense
Tourist - excellent
Bad:
Skyline - repetitive, loaded with clichés, so bad it was almost funny.
Good:
Soul Surfer - Wow, excellent movie
Hop - cute, the grown ups accompanying the kids would likely enjoy it too
Rio - cute, fun even for adults
Killers - really enjoyed this, have seen it two or three times
Knight and Day - also enjoyed, worth seeing
Unknown - good, but intense
Tourist - excellent
Bad:
Skyline - repetitive, loaded with clichés, so bad it was almost funny.