Beat-em-ups are a fun genre. I remember playing through Golden Axe and Streets of Rage countless times as a kid. I just played through Capcom's Alien vs. Predator at the local arcade and it was pretty great; too bad there's no console port.
I think I'll make a serious go at beating Viewtiful Joe for Gamecube. I remember thinking it was super-cool looking but also having a hard time with it.
Part of me would like to also play through the D&D games on XBLA; I regret missing out on getting X-Men and The Simpsons when they were available. But I also ought to shrink my backlog so I might add a couple titles from Sonic's Ultimate Genesis Collection. Or play Toxic Crusaders for Genesis for however long I can stand...
I'VE GOT CHOICES! That's a good thing!