I just thought I would let people know that these games are on sale on Amazon digital downloads. They activate through steam, so if you live in the US or use a family members address (as I did) you can buy these cheap.
Lego batman 1: 4.99 here
Lego bastman 2 7:49 here
I haven't played 1 but I bought 2 and am really enjoying it. The Lego Harry Potter games are also on sale.