If you weren't expecting Nike to be at the top of this list, then you have no business even getting this far. The brand started in 1978, but secured its place atop sneaker mountain in the '90s. With new technology to increase performance as well as defining the aesthetic early in the '90s for the entire decade to come, Nike became much, much more than just a brand. It may sound corny now, but Nike was one of the first brands to define a lifestyle-a concept that took root in the '90s and continues to define the way we consume and identify via clothing now. When Nike told you to "Just Do It" in the '90s, trust us, we all did it.