Bomb recoveries are used to extend the horizontal recoveries of Link, Snake, and Samus. In all cases, the used character must produce an explosive item, by which if hit, will give an extra jump and thus enhance recovery. It has been present in all official smash games.
Samus
Samus' bomb recovery is performed by simply using her bomb move in the air, and then laying a second bomb to hit the first and bounce herself upwards. Repeat as desired. This gives Samus the ability to recover easily from any attack, and when combined with techniques such as Samus' Grapple Beam and Rising Grapple, edgeguarding her is a serious chore. The bombs come out quicker overall in melee but it is easier to weave around the bombs in Brawl due to the floatiness of the game.
Link
Link's bomb recovery is reasonably difficult, but it is the best way to get the most out of the player's recovery with Link. Lord HDL defines it as follows: "Bomb Recovery - Third form of recovery that involves tossing a bomb up while falling and immediately using spin attack to hit it in order to perform another spin attack or change direction for hookshot use. Cannot be done by Young Link." There are three ways to perform the Bomb Recovery:
While returning to the stage and falling, throw a bomb upwards, and immediately Spin Attack into it. The bomb should explode allowing Link a second up special, or a Hookshot Recovery (if you are not facing away).Use his midair jump, and immediately throw the bomb up and Spin Attack. Simply drop the bomb while falling, wait a moment, and Spin Attack into it.
If the player can predict it, they could also pull out the Bomb ahead of time and have it explode in his hand after they Spin Attack. Then he can Spin again. This is usually done accidentally, and is the only way for the Links to use bomb recovery in Brawl, since they can no longer slash their own bombs.
Snake
Snake's bomb recovery is very much like Link's. When falling, if a C4 is planted and Snake fast falls and detonates it on himself, he can use Cypher again because it causes flinching. Grenades can work as well, though you need extra time if you use this option.