It's totally retarded but I can't stop playing it. There's this sadistic satisfaction I get from jumping chunks of meat into spinning sawblades. It doesn't even matter if it takes me a million tries to finish a level. Watching the replay afterwards is awesome. You get to see the rat race of all the little balls of meat dying horrible deaths.
I like simple games like this in the downtime between Guild Wars 2 Beta Events. It really does a great job of getting my mind off of things and allowing me to chill out for a bit, but stupid Super Meat Boy is this addiction that's going to end up killing my hands. Oh well. At least I'm having fun.