I'd like to see these 2 games come to the DS.
Paper Mario would play very nicely on the DS, and I honestly don't know why Nintendo hasn't brought it to the system yet.
The same can be said about the 64's Zelda titles, which would play just fine on the handheld system.
SSB might be a little tricky simply because of the dpad, but it would still be wicked cool, especially with online play/downloadable content. And with the DSi XL coming, it would look great on the big screens.
Which 64 games would you like to see on the DS?