8-Bit/Chiptune is all I have on my iPod.
Nothing else cuts it for me.
I love it so much because it comes from that special era in gaming where people had to take less and make it more. Game play and design wasn't regulated by how much power the console held, but how you used it. Limitations made the games special. Chip Tunes or 8-Bit was the only way producers could emulate sound in their games and good god, when I first heard what they decided to do with it I was blown away. Top Gear, Mega Man... damn.
Besides, I hate singing in music.