None. IMO I own everything that is worth owning this generation. A PSP, DS, Wii and PS3. I am however ashamed that I never bought a Dreamcast and I am looking into getting one soon as I found and bought Shenmue 2 for $2 at the fleamarket =p Also, I never owned a PS1 and I am kinda ashamed that I never owned that one either. Or any other SEGA console for that matter...