I'd nostalgia in my pants in Jet Grind Radio was re-released on the 3DS, heh.
Sega could certainly use some money by reviving great classics from the Dreamcast on the 3DS. I never owned a Dreamcast and could only play on a friend's, so I'd jump at the chance to being able to own some Dreamcast games. =)
Especially said Jet Grind Radio.