What I'd really love to see is a Robot Chicken sketch where they have two pilots on a TIE: one to fly the ship and the other with his face by the window to make the "yaaaaaaaaahhh" sound.
I love the TIE fighter sound, to me it's one of the most iconic sounds of the saga. This summer, if you happen to spot a white car on the highway with some dude with his head out of the window doing the TIE fighter sound, that's probably me.