Only games I can think of are Stacking and Costume Quest. I'm probably going to get them at some point when I feel the price is right but interested in your opinions.
I wouldn't go out of my way to ask review ideas, though. If you're anything like me, you probably have plenty of titles in your Steam library for future reviews.
I do have Costume Quest, I shall add it to my list. My Steam catalogue has over 350 titles, so I am a bit spoiled for choice. That was one of the reasons for starting the blog, to make me actually play the games I've amassed.