The "It's over 9000" one... that's *so* totally wrong. Captain Falcon should have been turned to a pile of mush in that one, and his face sure shows it at the top-left corner of the screen.
Same way for the last link, except that you get to see it more since the person actually finished the track. Three laps in under 18 seconds. lol.
It's like, "Blargh! My face is being ripped off by teh extreem speedz and stuffs! Yay! I'm going to die but at least I went over ten times the max speed of everyone else! *dies*"