Yeah, yeah, the old book-by-its-cover saying comes to mind, but I think we've all done it: judged a slice by its appearance. I've walked into slice joints with pizza hounds where we've looked around, didn't like what we saw, and busted it out the door in search of better-looking fare. Granted, maybe we missed out on something amazing. But I'm wondering if you have any telltale signs that a slice or pie is good or bad. What indicators do you look for when you first walk into a pizzeria?