In Mortal Kombat (aka Mortal Kombat 9, 2011 version) for the Xbox 360, there are special “moves” you can do in spectator mode while waiting for your King of the Hill match to start.
Highlight your Avatar and click the A button to bring up the menu, then press the following button combinations to perform the listed moves.
“FATALITY!” – Up, Up, Right, Right, X
“FIGHT!” – Left, Right, X
“Finish Him!” – Left, Right, Left, Right, Y
“HA!” – Down, Up, Down, A
“I’m Not Worthy” – Down, Down, Y
Big Clap – Right, Up, Y
Cheese – Left, Up, Down, B
Cover Face – Left, Right, B
Curse Bleep – Up, Up, B
Devil Horns – Down, Up, X
Diamond – Up, Down, Left, Y
Double Devil Horns – Up, Down, Y
Gather Ice – Right, Right, Right, Left, Y
Hop – Up, Up, X
Lighter – Down, Down, Up, Up, X
Number One Point – Down, Up, Y
Point – Right, Right, X
Raiden Pose – Left, Left, Right, Right, X
Shake Head – Left, Right, A
Sleep – Down, Down, Down, B
Stink Wave – Right, Left, B
Stretch – Up, Down, Down, B
Throw Tomato – Down, Down, Down, Up, A