I've just finished Prince of Persia: Warrior Within after having played for like 4 hours straight! The ending was hard to understand, but it was great even though.

The game ended up being very good. It's not as good as The Sands of Time, nor other action adventure games like God of War or Ninja Gaiden, but it was a worthy sequel to one of the best adventure games on the market. The music was crap, and the fighting pretty tedious, but together with some awesome environmental puzzles and a far lengthier story than the previous game, this game ends up being very good indeed.