School of Rock is probably best viewed with low expectations; the same is true of Starsky & Hutch. I admired SOR's ability to make a movie about music and kids without being manipulative or schmaltzy. As for Starsky & Hutch, remember the following things in order to have a good time:
1. It's a prequel (origin of the partnership)
2. It's Stiller and Wilson, so expect Stiller and Wilson-type schtick
3. It's from the director of Road Trip and Old School; while not nearly as potty-humour oriented as those two, it's very similar in tone
4. It's not consistently laugh-out-loud funny, but it will have you grinning from ear to ear a lot of the time