Once in a while, I play some old games just to relive the memories. While not as compelling as the very first time, there's still a good factor of nostalgia that does the trick - not to mention, takes my mind off of everything else for a little while.
Recently, I played some Pokemon (the original Blue version). I might do it again this weekend, since the last time was over a month ago.
During my next vacation, I'll probably pull out of my old Nintendo 64 and play some Mario Kart and Super Mario 64. It's been several years since I've pulled that one out.