Summary: I'm a big Naruto fan, so I bought this when it was on sale. If you aren't a fan, don't bother. If you are a fan, pick it up when it hits the $10-15 range. The combat is pretty simple and gets old. The fun comes from collecting and playing as such a large group of characters. If you're favorite is missing...than your favorite is either too new or too obscure ;) In my opinion, the best Naruto game to be released in the US so far has been Ultimate Ninja 3 on the PS2.
Summary: Okay, first of all, this has no storyline. It's all about ranking up. You start off as a low-ranking ninja doing easy D-ranked missions and end as a Jonin doing S-Rank missions. If you don't mind that, then this game is pretty good. As another reviewer said, I like how each character has their own qualities. Lee is faster than Choji, and I believe other characters can jump higher than others (say, Kakashi and Naruto).
Summary: This is a great game. I'm only up to the B rank missions right now but the jist of the game is this: you start off with D rank missions and move up to higher missions with higher difficulties. Along the way you'll unlock different characters (27 in total) and different jutsus. I love the attention to detail. Each character has their own distinct fighting style and not just a cheap copy of moves when performing regular attacks. They also use the real character's voices.