I have one, I know i brought it up before, but:
If you stand on the edge of almost any stage, and grab a character and throw them down, they would fly straight down to their deaths.
On FD, you can have Falco punch the opponent to set up a dthrow, depending on who the other character is, you would either have to face towards the middle of the stage, or to the outsides of the stage. They have no way of getting back up.
The only ones not affected by it are DK, Bowser, Jigglypuff, and I think Fox. The only way it would work would be facing against a very active opponent, not just one who stands there motionless (I think that DI has a role in the glitch).
It's great for instant kills.