Sonic Drive-In.

[Heli0s]

Imo, they have some of the BEST fast food you can get. Their hamburgers are huge and awesome, and their selection of drinks are the best. Just, as I said, they fall short on their limeades and slushies (in my town, anyway). They have awesome shakes, though. They also have malts, and this thing called "Sonic Blast", which is apparently ice cream, a shake, and some chocolate bar in one. Here's a pic (with butterfinger):

Sounds good. I should give them a try some time.

That shake looks like a heart attack, man.