I totally agree with the Telus, panago ads. Drive me nuts.
For me, the one that make me want to jab sharp objects in my ears have to be those dang mini wheats, vanilla flavor commercials. That cheerful song they sing on a cartoon beach could be used as a form of torture. To compound my seething hate for this ad, they have now put it on the radio as well so I can't get away from it.
On that note, the Speedy Glass repair radio ad is like chewing on tinfoil.
Hands down though, my favorite commercials have to be the Caveman Geico ads.
http://www.youtube.com/watch?v=zZrjr4A-ASQ
Love them!