Black Ops Mythbusters, episode 4

Myths:

Diving into water will protect you from fall damage.
An indirect kill from a killstreak will count towards unlocking your next killstreak.
A well placed tactical grenade can kill a previously undamaged opponent.
A Napalm Strike can destroy a Care Package helicopter.
Using Chopper Gunner, you can take down Spy Planes.
Launching a Valkyrie while airborne will leave you floating in midair.
You are invulnerable while diving.