Adverts nowadays are bloody annoying but there was an advert that used to be on a few years ago advertising the Nissan Almera which I thought was really good. They were spoofs of The Sweeney and The Professionals. I thought that advert was bloody brilliant especially The Sweeney spoof. Those actors on that advert were dead ringers for the Late John Thaw and Dennis Waterman.
Here is the Nissan Almera advert
http://www.megaupload.com/?d=BGAGSYDY
Older adverts that are my favourites include The Turkish delight ad, The Ready Brek ad and Cadbury's Smash.
Doc