I play every system except PS (not a big fan, surprisingly enough.) I got Sonic Generations for the 360 as a gift, and I recently downloaded Sonic CD on the 360 as well. (I'm a big Sonic dork.). Those two have kept me busy as of late.
I also have been making my way through Skyward Sword, and I recently did my New Years thing: break out my SNES and play through all 96 levels of Super Mario World. I have done this yearly since 2004, and my time gets better every year.