If I were to just stab at what kind of commercial games I'd like to see, I'd have to say mostly indie games (2D boy as mentioned before, yuan works... maybe contract them to make an exclusive title, apex designs, maybe drudge vektar out again, or take the idea and run with it a little more, cave story, sure you may not have to really pay the guy, but why not throw him a nice donation for letting someone port it anyways?), as it's an indie system, why not fuel it with indie blood
Putting my indie-loving obsession aside, I'd also be interested in stuff like Conkers Bad Fur Day, Trip'd (from the 3DO, one of my favorite old puzzle games), and maybe try for bioshock mobile... or slowly work your way up by trying one by one to find just one game of each genre (one fps, one racer, one strategy, etc., etc.) this would allow you to cater to a wider range of tastes, maybe not giving everyone exactly what they want, but something close. I can't wait to see if some of the already suggested as going to be ported stuff like Qwak actually makes it to Pandora, and would be interested to see if rapid racoon wound up making an appearance... If I had to be totally unrealistic, I'd say a MGS, Castlevania, and a final fantasy or other classic hit RPG... some of blizzards older titles would be cool, like a remade blackthorne or starcraft... and ideally, an evil dead game similar to blackthorne, but 1000X more awesome and with a perfectly intuitive and natural control scheme... I'm sure I could go on, but realistically, I'm just blathering on about what I would want, not what would further the pandora, or what the community wants, so I'll stop