I hate the old navy commercials where they take good songs and rewrite them to inclue their shitty clothes sales. Plus, I really hate diaper commercials. They always come on when your eating, and your forced to witness a smelly baby's ass.
I hate the commercials for my school (IADT), because we have all these students who are in computer animation, ditigal productions, etc, and they pay someone else to do the commercials, and now they look like CRAP.