Although Discovery airs fascinating programs all year, there is one week a year that it is best known for: Shark Week. During the last week in July, the longest running-cable event ever is the forefront of the television channel. How exactly has Discovery cultivated this enormous following for an entire week dedicated to sharks? How has it made it so big in just 30 years that people such as Shaq, Gronk and Lindsey Vonn want in? Much of it comes from its PR and brand building over the years. Let’s take a look at some of the biggest moments in Shark Week over the last 30 years.