This advert was the most expensive ever made at the time, required a massive amount of people, and a equally large support crew. But it worked incredibly well, spearheading BA's "The world's favourite airline" slogan, and propelling the airline into the huge success it enjoyed after years of losses and a privatisation. Even though it is nearly 17 years old, this advert is still remembered by many people across the world.
P.S. The British Leyland ad on that site is hilarious, "this Allegro is the best foreign car i've ever owned"

Also, the rather non p.c. for todays standards BCAL ad is well worth a watch. :nahnah:
Nick