What's the craziest advertising campaign you've ever heard of?

I'm one of those guys that watches the Superbowl partly for the game, and partly for the ads - so this is the perfect question for me.

Personally, my perfect ad combines humour and a little bit of "cheekiness".

I've always been a fan of the Got Milk? ad campaign, ever since first seeing it on the pages of Sports Illustrated.

I also like the Dr. Pepper series of ads that enshrined the phrase "What's the worst that can happen"  into our collective thirst-quenching psyche.

In terms of the "craziest" though, I guess we'd have to stray into the world of guerrilla marketing. This is a realm where non-conventional marketing methods are used to grab people's attention and make an impact.

I love ads that make use of urban spaces like this fast food brand's attempt below:

Unilever's French-based deodorant brand Axe run some of the most creative and outrageous advertising campaigns I've ever seen.

Although their sexually overt nature might not be to everyone's taste, they're usually done with enough tongue-in-cheek to get away with it.

Although the following example might be considered a road-traffic hazard:

I also really like this video, especially because it features that woman for the TV show My Name is Earl: