Ghetto jump
From M2K2: Metroid Prime 2 Wiki
See also
http://www.metroid2002.com/techniques_ghetto_jump.php
Discovered by: Paratroopa
The Ghetto Jump (which was named by Kip) is a move used to achieve greater jump heights than usual by means of using a wall and holding L to lock your veiw. When jumping, press against or just barely touch a wall. There are different variations of this jump, such as holding L for a certain amount of time or jumping into a crack to force yourself upwards. It all depends on your surroundings.
The Ghetto Jump is most noticable when you execute this trick underwater, while still being hindered by the affects of water. Extremely high distances have been recorded. Some hindered single jumps have even matched the height of regular, unhindered space jumps.