aDOSbox - it's an Android port of the PC app DOSbox. It's early alpha code, but runs some things pretty well. I actually had Windows 3.11 running on my Droid. Not very well, but running.
I was able to get dosbox working using wifi keyboard on my droid x and so far i have master of orion 1 running up untill you name your planet. then it freezes. working on a config for it
That's great...MOO II is actually what I WANT to play, but it just runs too slow on aDosBOX right now. :-(
I hope they update it soon. I've been playing Angband (an old ASCII DOS game) that someone ported to Android and put in the market, so my hopes are high.