
I can't really think of a favourite (unless the one for CHSIB qualifies

).
The advert that really drives me up the wall is for Headex.
If you haven't seen it,a woman is in the kitchen.A couple of very loud,high pitched childrens voices are saying "Mum can we have a rabbitt" over and over again while in the back ground a kettle is whisteling loudly.
The aim is obviously to sell more headache tablets by giving you the headache in the first place
I will NEVER buy Headex

.