Picked it up early last week. It’s pretty fun; anyone else playing?
Just downloaded the demo from XBox Live for my wife, yesterday. I don’t know why – it’s not like there’s any doubt we’ll end up getting it 
She has played all the Lego games to death (all Star Wars, Indy 1 & 2, Batman, Harry Potters etc.), to the point of 100% completion and maxing out the stud counter in the ones where it’s possible.
Of all of them, both she and I enjoyed Lego Batman 1 the most probably - the ability to play through again as the villains, plus the coolness of the Bat Cave made it our favorite. Looking forward to trying #2.
I’m almost done with it - basically just need one more achievement, and I’ve completed the game.