Mech Commander Gold, which I picked up for 99p at my local game shop, and it worked with a fantastic level of tweaking (Almost none!)- Installer didn't work, but because the CD was uncompressed, I just moved the files onto my hard drive, ran the game in windows 98 compatibility mode, and bam! perfect. I'd like to see you do that on your shiny PS3 or Xbox.
Also, Torchlight. I've been having fun with an assassin class mod. It was a little unbalanced, but I fixed it. Metal in the background, a quick finger on the skills and I'm jumping around like a real ninja- teleport, BAM, teleport BAM, teleport, BAM.