Alanah and I picked up a copy of Lego Star Wars last night. It’s a lot of fun (in a big dopey shattering-Lego-pieces kind of way) and totally geared towards young children playing with their nerdy Star Wars parents. Tandem gameplay is setup well, with the ability for a second character to drop in and out.
If you’re looking for super complicated, insane, graphically eye-popping whatever, you can probably find something better. If you’ve been playing various arcade and console emulators and like mindless repetitive gameplay, I highly recommend it.