Virtual Boy Wario Land.
No, it's not for GB/GBA, it's the only "portable" game I don't have that I'd care to buy through this service (and it'll save me $70+ on ebay). Otherwise, I'll stick with new downloadable games... Of course, if Nintendo were to get Sega to jump on board with Game Gear games, specifically the ones that Sega never brought to North America which were like, what, all of the good/interesting ones (namely Phantasy Star Gaiden), I'd be at least... okay, not that much more interested, but a little more interested.