Most bad adverts I'll mute, but there are a few that annoy me so much, I'll change the channel or go out the room. As I watch a lot of sport, my current bête noire is one of the many millions of gambling ones that come on during football matches - I can't remember which brand is responsible for my hatred (and I'm definitely not looking them up) but it's the one where there are two blokes in varied different sorts of dire circumstances (stranded in the Antarctic, life raft lost at sea, etc.) and one of them somehow has a signal on his mobile but rather than calling for help, is using it to bet on sports and be a completely annoying twat to the other person who's actually trying to get rescued.
And don't think for a second that this is a rant against bookmakers advertising in general either - some of them aren't terrible and I quite like the Paddy Power Steward (Total Eclipse of the Heart) advert at the moment.