Ok, I know Dreamcasts are "old", but I got one in exchange for Obi-Wan (X-Box) so it was cheap. The only game I've got is Legacy of Kain: Soul Reaver. Other than that I've got one controller and the unit. I figure I'll get another controller and pick up a few sports games since they're so cheap. What else should I look for? What's the deal with the different memory units? TIA!