Usually people stand around and stare at me akwardly. Some people take pictures, some people take videos. Some people yell shit at me and I gotta be all, "Goddammit I'm supposed to heckle you, not the other way around assholes!" I jump around like an idiot. Sometimes, afterwards a guy will me money.
Also, I pulled out my gameboy the second day of "electronic ensemble" at college, and everyone was like, WTF AWESOME (too my surprise). At the end of the year, we had to play a concert. Everyone had macs and midi interfaces, I had a gameboy and a feedback looping mixer. I was the rhythm section. Much positive feedback! A+, would play again.
tl; dr: play chiptunes in an academic setting, you will get mad bitchezzzzzzzzz