Let's say you want to weep for Shawn Kemp's dunks in the '91 slam dunk contest, because everyone is forgetting the talent that preceded Blake Griffin. Hoopism is here for you, with video for any single dunk you want to see.
The site's collection of dunk contest videos stretches back to 1984, the first year the NBA hosted the event during All-Star weekend, and it's presented in easy graph format — hover your mouse over a circle to see name, year, round, dunk, and score, and click on the circle for the video of the dunk. It's an impressive homage to a tradition that, while having collected some deserved reputation for shtick in practice over the years, is totally perfect in theory: it's (usually) the best dunkers throwing down their best dunks. And here we have 17 years' worth of video of just that.
Apologies to your productivity today.
Every NBA Slam Dunk Contest Video Visualization [Hoopism]