Even though this video has no relationship to LeBron James, I'm posting it because of him anyway. Sometimes you realize you're watching greatness right in front of you.
At least in terms of skateboarding, this dude, Rodney Mullen, is the LeBron (or since he's much older, the MJ) of street skating. He's created more moves than Shawn Kemp has kids. He does things with a skateboard - like LeBron with a basketball - that no one else can do. Check out some of the stuff at the 3:35 mark, that's when he does some stuff that seems to defy physics.
The video also features one of the greatest songs ever, "Train in Vain" by The Clash, and if you keep your eyes peeled, you'll see Jack Nicholson.
And hey, it's still more xtreme than this.