I really love Hovis' - they have a knack for good ads. The recent one with the boy running through different time periods of Britain is spinetingling. And there's the classics with the cycling down cobbled streets, etc.
I strongly remember the Famous Grouse ones.
As for ones I strongly remember...hmm.
LOL:
omfg. omfg. omfg. omfg. omfg. omfg. not enough omfgs. best. advert. ever: