First, Captain Ginyu puts his hands to his sides and charges purple energy spheres. Then, as he shouts "You're mine!", he puts his hands forward and releases a massive barrage of energy blasts at the opponent, causing major damage to his opponent.
Captain Ginyu uses this attack during his battle against Goku on Namek. Irritated by Captain Ginyu's incessant laughter, Goku orders Captain Ginyu to leave Planet Namek, but is forced to deflect Captain Ginyu's energy sphere attacks, to the captain’s amusement. Captain Ginyu decides to step things up a bit and attacks Goku with the Galaxy Dynamite, creating a huge explosion. However, as the smoke clears, Goku is barely fazed.
Appearances in games
The technique is called Continuous Energy Wave in Dragon Ball Z: Legend of the Super Saiyan, and Parmesan Shower in the Butōden series and the Budokai series. It was named Galaxy Dynamite in the Budokai Tenkaichi series, where it is one of Captain Ginyu's Blast 2 attacks. It also appears in the Raging Blast games and Dragon Ball Z For Kinect, as one of Captain Ginyu's Super Attacks.
In Dragon Ball Z: Extreme Butōden, it appears under the name Ginyu Gatling Gun as Ginyu's Ground Ultimate Combo.