Super Mario Galaxy has been 120'd. I haven't gone through it the second time with Luigi, but I'll probably chip away at it over time.
Pokemon Battle Revolution has been played through once, and the changed cups have been beaten as well. I haven't got all the Cups to Rank 8 or anything, and probably won't bother.
Mirror's Edge I went through in basically 2 sittings. I'm not "done" with it, after all it has speedruns. :) But it's off the backlog list as I've seen a decent amount of what it has to offer. Great game, too, actually.
Next game? Who knows?!? (probably Suikoden 3)