My summer of Pile of Shame was kick-started by my disappointment with L.A. Noire. I was really looking forward to it for some time, but it just didn't click with me. Fortunately I was able to trade it in for three games I wanted to play but previously lacked time for: Vanquish, Alan Wake, and Brutal Legend (which I've recently finished).
Plus, I'd already planned on finishing up some of those XBLA games that I started, but forgot to finish due to big releases. Namely: Stacking, Outland, and Scott Pilgrim.
That and I'd like to put some co-op time in to Trenched before Summer of Arcade begins.
If I've done my math correctly, summer needs to be about six months long this year.