The Sam and Max games on steam. Not sure if that counts though.
Mirror's Edge I think got a bad shake. I thought that the platforming worked well and was plenty functional. That, and it had artistically intelligent architecture and a well conceived soothing soundtrack. Didn't like the animation though; they should of kept it in game. It didn't have the worse story I ever heard. Largely, The hammering it got from critics was undeserved. People complain that the guns don't work well, but really, it's not about fighting. It probably will be looked back on negatively at first, but so was Ayn Rand's Atlas Shrugged, Evil Dead, and Beethoven