Five Guys, which I tried for the first time today. Got a regular hamburger with BBQ sauce, regular salted fries and a vanilla milkshake with whipped cream. It was just about the best 'fast food' I've ever eaten, though I don't think I'd call 5 Guys a fast food establishment.
I loved how many fries they packed in there and that milkshake was heavenly. Can't wait to go back someday