While not quite as brilliant as Lego Star Wars, Lego Batman is a great game. The puzzles are well thought out and its always fun to play classic comic characters.
The only downsides are that some of the suits seem a little clunky when interacting. When playing as the villains I got stuck multiple times where an event that should end the level did not occur, but replaying the level sorted this out.
Overall lots of fun. Best batman game prior to arkham asylum.