Some commercials I don't have a problem with (Don't get me wrong I hate ALL commercials), but it's the ones that play multiple times because they are sponsoring whatever is on at the time. Take for instance a Sharks game, I can't remember what commercials they are, but they play the same damn ones or even so much as playing the same one over right after it's been played once. It's @#$%^ irritating as hell.
Agree with the confused.com ads (they are truly awful), although they did inspire my mate to say "Jeez, you can tell that's not a real pint!" in all seriousness, which was quite hilarious... but the Kinder surprise ad is a classic! Scary as hell, especially when you were a kid at the time, but a classic nevertheless...
I currently hate those Budweiser adverts where the band are playing and the old guy is telling them stuff... A crap beer deserves a crap ad, I suppose...