These are the moves for Mortal Kombat 2. Only some of the special moves, and none of the finishing moves, are applicable to other MK games.

Special Moves
Flying Attack: Back, Back, Forward (can be done in mid-air)
Teleport: Down, Up
Lightning Bolt: Down, Down/Forward, Forward + Low Punch
Shock : Hold High Punch for 3 seconds, release

Finishing Moves
Massive Uppercut: From up close, release High Punch after holding it for 8 seconds (you must start a few seconds before the end of the round)
Shock Therapy: Hold Low Kick for 5 seconds, release, then tap Block and Low Kick until the fatality ends
Babality* : Down, Down, Up, High Kick
Friendship* : Down, Back, Forward, High Kick
Kombat Tomb/Pit II: <Block> Up, Up, Up </Block> High Punch

* Of course, you cannot do a babality or friendship if you've done any punching in the winning round