Starts of slow, but quickly turns into something impressive.
The controls are a bit buggy. Sometimes the double jump doesn't seem to want to work, but it isn't bothersome enough to cause problems, just frustration. I felt that Jak could have used a few more "moves", he's got quite a few, but rarely is it required that you use any of them. I feel that a little more integration with Daxter as a playable character would have been a welcome addition also.
All in all, it's one of the best platformers you're going to find on this generation of consoles. It holds it's age well and has a few sequels to keep you begging for more.