It made you remember the advert/product, so the advertising company has done it's job.
But I agree, the "geek/nerd" stereotype is getting a little stale now. Do we need to change the stereotype image? We could do, but what would be the point? No-one would remember the product, so advertisers wouldn't pick up on the new image.
All male images in the advertising arena are derogatory towards men anyway, so chaging one wouldn't make a difference.
Technical adverts: Always portray men as either skinny geeky nerds with thick horn-rimmed glasses, or fat hairy sweaty blokes with personality problems.
Shopping adverts: The man is either following the wife around and hasn't a clue what's going on. Or they're on their own, again clueless, and need help from anyone who's available.
Cleaning products: "Mr Muscle", I think that speaks for itself, or again it's some clueless bloke who doesn't know one end of a toilet brush from the other.
Everything else: It's some 6ft2 bronzed adonis, with hair only on his head, drinking Diet Coke after saving a kitten from a tree whilst changing a wheel on a Nun's minibus after helping several old ladies across the road. I don't think any of us can compete with that!
Sexism in advertising? How about male stereotyping.