Chris Ward is one of the voice actors for some of the shows on Cartoon Network's Adult Swim. He is also MC Chris, a nerdcore rapper.

Check some lyrics from his song, "Fett's Vette." (available for download at his site):

Say my name is boba fett I know my shit is tight
Start not acting in right, you're frozen in carbonite
Got telescopic sight, flame throwers on my wrist
You still don't get the jist, spiked boots are made to kick
Targets are made to hit, you think I give a shit
Yer mama is a bitch, I see you in the sarlaac pit

Nerdcore Rap Spotlight: MC Chris

Example of their nerd-core lyrics:
Well my name is Gimli
I’m a fucking dwarf !
I been slaying mutherfuckers
from the south to the north
That ain’t Mirkwood I’m choppin with my battleaxe
I’m on an orc stampede like Shadowfax

Their video is the funniest thing I've seen in months!

Nerdcore Rap Spotlight: Lords of the Rhymes