Just got myself Terraria, Toki Tori, RUSH and EDGE.
Warning to everybody : Don't ever buy Superbrothers: Sword & Sworcery EP (Humble Indie Bundle V ftw). That games sucks, big time. Only the music is ok. But get Braid, it's freaking amazing.
I heartily recommend anything by Spiderweb Software -- especially the Geneforge series now on sale for $10 -- if you are a fan of old school role-playing games. :)