So I'm a gigantic Batman nerd, and I've enjoyed the Lego games quite a bit so far. The two Lego Star Wars games (and by extension the complete saga) were a fantastic mix of puzzling, platforming, and action. They even managed to throw in Legos and Star Wars, I don't know how you could not enjoy those games. Lego Indy was alright as well, but something about it just didn't sit right with me, but after seeing the original trailer for Lego Batman I knew I was going to love it, and Traveler's Tales seems to love proving me right.
First off, the gameplay. If you're looking for some new and groundbreaking game mechanics then...why are you even looking at this game? It's the same basic control scheme as the others. Punch, jump, build, and switch characters are basically the only controls. You can however throw batterangs by holding down the punch button (a very cool addition). And you can acquire all sorts of new abilities by switching suits. There's a glide suit, bomb suit, heat suit. Just about anything the old 60's batman comics had, you'll find it here folks. Playing as the villains is also fun, as each one seems to have some sort of unique ability that will probably have you laughing so hard you'll fall off the couch. Yes the camera can get off sometimes, and lead to some needless deaths, but it's not as if you get some sort of major penalty for dying in this game.
And the controls are so accessible, if you're looking for some way to get your non-gaming significant other into gaming, the lego series is the best way to do it, bar none. Generally I'm pretty alone in my love for my consoles, but I pop in Lego Batman (or Star Wars) and all of a sudden my fiance, brother, nephews, neices, parents are all fighting for the controllers. It's the weirdest feeling to be kicked off your controller by people who said you wasted your money on a console, but it's a gratifying one nonetheless.
And for the nerds, let's see here. It's an original Batman "story." Ok, it's not really a story per say, but it's not based on any specific movie or comic storyline. And it while it doesn't fit into any sort of timeline, the number of characters in it will blow your mind. Barbara Gordon Batgirl? Check. Nightwing? Check. Alfred? Checkidy Check! And for those of us who grew up watching the old Tim Burton movies, the original score from the first movie is used as the soundtrack. Awesome little details really make this game.
So if you love old school platforming, get it. If you like Batman, get it. If you've enjoyed the previous lego games, get it. If none of the above applies to you...well...I dunno what to tell ya. But for everyone else, you will not be dissapointed. Well worth it!