Only the first LEGO Star Wars is great, and then only the original Xbox/PS2 version. LEGO Star Wars II is just good, because they made it overly complicated with the cooperative modes. (And retrospectively adding them in LEGO Star Wars: The Original Saga to the first game, plus the bonus levels, was like urinating in soup.) And LEGO Star Wars III is not fun.
Much closer to the first LEGO Star Wars than any of the subsequent games.I've only tried the demo of the first Harry Potter one - it seemed OK.
I like the fact the Potter game is actually a spoof of the movies. I thought it was just reinventing the wheel from the other games based on the films, but my dad and I were surprised to see the jokes and poking fun at the franchise. Is Star Wars LEGO like that too? Doctor Who would be great for the LEGO treatment because it often winks at the audience a bit, too. I thought LEGO Potter was just for Wii but the other day I saw the two games are on PS3 as well so they're the queue now.
Alex