Green Missile
The Green Missile is a move executed by Luigi in Super Smash Bros. Melee. It is performed by pressing the Side+B. Luigi will then rocket across the stage, smashing any other characters. Luigi is able to charge this move up, which will allow him to fly farther and harder than usual. This will cause more damage to the opponent, sometimes rocketing the foe in the skies. Green Missile is actually a better third jump than his Super Jump Punch attack, as once Luigi has used that attack, he is unable to do anything else until he lands. The attack is very similar to Pikachu's Skull Bash.
Luigi and Princess Toadstool use a similar move in the The Super Mario Bros. Super Show! episode The Adventures of Sherlock Mario at the end. Luigi and the princess use this move to hit two members of the Koopa Pack. This may have been an inspiration for the move, but it is unlikely.