This is an interesting post on the upcoming Dreamcast emulator for Android:
http://www.droiddog.com/android-blog...ndroid-nulldc/

The speed is quite impressive so far. Though it's clearly not running at native speed, with some frame dropping support and further optimization, it should play quite well upon completion!

There are a handful of really great games for Dreamcast that would be a blast to play on the Galaxy Tab. Some of the top of my head are: Resident Evil: Code Veronica (solid survival horror with great graphics and decent puzzles),
Leagacy of Kain: Soul Reaver (a nice puzzle action game),
Armada (a great space shooter),
Powerstone (a wildly fun and unconvential fighting game),
Powerstone2 (the sequel which adds very interesting gameplay),
Soul Calibur (one of the best fighting games I've ever played),
Virtua Fighter 3 (a classic game),
Grandia II (I. can't. wait. Solid and fun RPG),
Skies of arcadia (more RPGish, but in the right way),
Crazy Taxi (a fun arcade full freedom driving game),
Jet set radio (one of the best games ever made),
Marvel vs. Capcom II (a great 2D fighter)
+ more

All of these would be brilliant to be able to play on the Tab, and with amazing graphics to boot! It's amazing how far we've come! Dreamcast on the Tab? 100% win.

Oh, by the way, the N64 emulator is also en route! Now where's my GPU accelerated PSX emulator?