Yes, Mario 64 ds is amazing. I've had it since the launch day, beaten it completely twice, and I'm still playing it. It's soooo amazing... that probably have to do with that I never played the original Mario 64, but whatever. The level of polish throughout the game is astounding.
And there's practically no way they're going to port ocarina of time, as that wouldn't make much sense with the virtual console coming out so soon.
If you want more platformers, I highly recommend Sonic Rush, New Super Mario Bros., and Kirby Canvas Curse in that order. Rush and Mario bros have tons of replay value and are really fun, but Canvas Curse is just so unique and good that it can change how you view a platformer.
Other games I suggest are Metroid Prime Hunters, mariokart ds, Animal crossing, and Advance wars ds if you're looking for a good strategy game. For rpgs... I recommend nothing that's on the ds yet. But I do recommend looking at FFIII and the new Pokemon's when they come out. I also suggest looking at spectrobes, which looks like it might turn into something good.
Oh yes, the Elite Beat Agents game got a 9.5/10 on ign, and from the vids looks really impressive. So, if you like beat games, that's probably one to get.
Please don't post in the thread my sig leads to.