I don't know about this list. It has Kevin Johnson twice, Michael Jordan only once, and Ricky Davis and Scottie Pippen with unremarkable dunks. There are a lot of people who should be here who aren't, including Kobe Bryant. (One of my favorite all-time dunks was his twisting alley-oop from under the basket, I think against Philadelphia.)
But it's worth a look, especially for the broken backboard.