I've had problems over the past few years of my belt loops on Levi's jeans breaking while the rest of the jean is still near perfect.  My mother had been fixing them for me for a while, but thanks to Rob prompting me to see if they have a warranty, I sent a pair to Levi's to see what they'd do.  Sure enough a week or so later, we got a monsterously large box with a pair of jeans in it.  A brand new, pristine fresh pair with all the labels still on them.  Way to go Levi's for having incredible customer service.