Pick a favourite? Just one? Impossible.
@MsH
Over here in the UK, we've got way too many good ones to choose from to pick one as a favourite.
Not just single ads either, but whole advertising campaigns. They usually follow the same theme.
I'll go over a few of them now.
"I bet he drinks Carling Black Label."
This one went on for years. All kinds of things, from king arthur's return of excalibur to the lady (or in this case, ladies of the lake, synchronised swimmers no less)... to the dam busters, with the german soldier catching the bouncing bombs...
There was one advert that spanned almost the whole commercial break, four adverts in one. It started with an old west bar, a man sitting at it when a bunch of vigilanties catch him, he runs, they lassoo him and he drags them through the desert. One being dragged says "I bet he drinks carling black label."
Cut to a couple of housewives in a supermarket.
"Don't use that one Deirdre! Use this!" As the man drags the cowboys through the supermarket causing mayhem.
Cut to a man in a white dinner jacket throwing a rose off a bridge as romantic music begins to play. Song titles scroll across the bottom as the voice over starts plugging an album of love songs.
The man dragging the cowboys appears and the scrolly text changes, ending with I bet he drinks carling black label.
Then back to the desert. Back to him dragging those cowboys. Finally he slips the ropes and runs into another bar, grins at the camera.
And that was just one of them.
Heineken went on years before those started with some boody good ones too. Only heineken can do zis, because it refreshes ze parts other beers cannot reach.
One of the stand out ones there, probably the most famous was the reverse pygmalian (or my fair lady if you like) with a posh woman in an elecution class trying to talk common.
"The water, in mayorka, doesn't taste quite house it should?"
"No! The wa'er in maJorka don't taste like wot it oughta!"
"Mayorka?"
"MAJORKA!"
Hands her a Heineken. "Get you larfing gear around thar!"
She takes a sip. Turns instantly common as muck.
Hamlet was "Happiness is a cigar called Hamlet." Even stole from other commercials. One advert for toilet roll had labrador puppies getting tangled in andrex toilet roll and unravelling it all around the house, for example. "Soft, strong and very, very long."
The hamlet version? A man in an outhouse. A hand reaches down just as a puppy runs out taking the last of the toilet paper with it. A strike of a match, the puff of smoke and that air on a g string music plays. The theme tune for hamlet.
Search youtube for them. Most of them are on there and they all sound better than the ones so far described from America.