It gets to the point where it (the 9/11 footage) stops crossing the line and starts to be a sort of cosmic joke. As in, "Hey, look at those stupid humans killing each other again. How amusing." I dunno, it seems like something Nyarlathotep would enjoy.
The bonus scenes in the animutation Holy Shit, Ninjas! really benefitted from the use of Yakety Sax as it's BGM.
ESPN's Dallas radio station introduces the head coach of the Cowboys with this song whenever they cover one of his press conferences, to poke fun at his questionable toughness.
Occurs in The Adventures Of Jimmy Neutron episode "Who Framed Jimmy", when Jimmy, Carl and Sheen are chased by a bear through the woods. At one point, a butler comes out of nowhere and serves Carl a milkshake.
"Queen of Let's Plays" MangaMinx sometimes uses this during her Let's Play videos of horror games at points where she keeps screwing up and dying in the same segment, accelerating the video speed while it plays until she finally gets through it.
"Girl and the Echo". The Music is played during the girl's Trauma Conga Line, and conveys the mood of the bullies.