Definitely so, indeed.
This is one of the best 3rd person action-games ever. And totally brings the Ninja Gaiden-trademark into the 3d-world of gaming. The controls are smooth, the story is sufficient and the action is great. Ryu Hayabusa is back and whipping. The game has great replay-value, and it's difficulty is just right. It's hard, but aren't games supposed to be quite hard? (At least I think so, though many may disagree).
Anyway, this is the game for you if you seek a fast paced actiongame for the X-box, with great controls, decent camera and a superb grafical presentation. Oh my god! Ninjas are cool again... who thought that would ever happen since the Turtles stopped airing.