The slogan “think different” and corresponding advertising campaign was created by the agency TBWAChiatDay for Apple in 1997.
This spot is 11 years old, but remains one of the best brandings i´ve seen (They didn´t even had to show a product).
And it´s so cool.

Here is a link to the making of. The best part is one of the creators gushing about this amzing new tool called Photoshop that they used for the ad placements.
You can find a whole lot of interesting different versions here.
And a typography based clip here on youTube.

And this is the (brilliant) text:

Here’s to the crazy ones.
The misfits.
The rebels.
The troublemakers.
The round pegs in the square holes.
The ones who see things differently.
They’re not fond of rules.
And they have no respect for the status quo.
You can quote them, disagree with them, glorify or vilify them.
About the only thing you can’t do is ignore them.
Because they change things.
They push the human race forward.
And while some may see them as the crazy ones,
We see genius.
Because the people who are crazy enough to think
they can change the world,
Are the ones who do.