My favorite advert is the National Accident Helpline one with the fat woman falling on the floor.
Alan Carr - "The advert's funny innit? When that fat woman falls over, it's funy innit? In that reception, she don't see the puddle does she? Too busy eating, that's the trouble. She goes down like a sack of sh*t don't she? Her handbag flies in the air and a pasty comes out - no LUNCH!"
LMAO