I was once forced to sing "Kiss Me Deadly" by Lita Ford. It was all a friend of mine wanted for his birthday. It was horrible. I am so not a belter.
Songs that I actually sing decently: "Fast Car" by Tracy Chapman, "Desperado" by the Eagles, most songs by Indigo Girls.
I could get away with "In Your Room" by the Bangles, because I do kittenish well.
I'll have to ask yendi what else I could get away with... I'll re-comment later if I can think of more!
Oh yeah. I've been known to sing "Ice Ice Baby", "One Week" by BNL, and "It's the End of the World As We Know It". Not well. But I have fun.
Adding here: House of Pain, "Jump Around". I'll serve your ass like John McEnroe, y'know.