Sega Smash Pack Vol. 2 - Sketch fart

Sketch fart:
Defeat all enemies in a room, then repeatedly tap [Down]. Alternately, hold [Down] and attack an enemy.

Sketch dance:
Hold [Left] and [Right] to make sketch dance.

Invincibility:
Go to the juke box under the options menu. Press C after selecting each of the following tracks, in order: 3, 12, 17, 2, 2, 10, 2, 7, 7, 11. Start a game and your power bar will never decrease.

Level select:
Go to the juke box under the options menu. Press C after selecting each of the following tracks, in order: 14, 15, 18, 5, 13, 1, 3, 18, 15, 6. Highlight a number from 1 to 6 and press C to advance to select a new level when a new game is started.

Kung fu move list:
Change your button control list by selecting "Button Configuration" in the options menu. Press [Left] until you get to A = jump, B = to select an item in the inventory and C = attack. The following moves may now be done with this configuration.

Jumping air kick: Press A C.
Turn around kick: Press [Left], [Right] C.
Air somersault: Press [Up], [Right] A.
High roundhouse: Press [Up], [Right] C.
Knee kick: Press [Down], Right] C.
Trip: Press [Down] C.
Punch: Press C.
Upper cut: Press [Up] C.
Distance air kick: Press [Up], [Right] A C.

Combos:
After 3 punching moves: Scissor kick
After 3 high roundhouses: Distance air kick
After 3 knee kicks: Hand plant kick