Simply INCREDIBLE Slam Dunk Competition for 2008. Perhaps the most fun I've ever had watching a meaningless duel of people putting a ball in a hoop for celebrities. Dwight Howard completely stole the show with one of the most memorable dunks in the history of mankind, in which he used his superhuman abilities to throw the ball in the hoop. Seriously, the ball leaves his hands like a foot away from the basket. This may not be a "dunk", but it made me scream with delight like a schoolgirl. It was so cool, little kids had to make little construction paper projects to look at it so they didn't hurt their eyes (like when they attempt to look at the sun).
I'd elaborate more on this dunk, but a picture is truly worth a thousand words in this instance: