"Those of you that love Mythbusters on the Discovery Channel will be very happy to know that there is in fact a form of Mythbusting taking place for Halo Reach. As of right now they have 2 episodes out and in the 2nd episode the following myths will be busted or confirmed.
Can you survive a fall by landing on the other player?
Can you kill an enemy just by hitting them with a grenade?
Can you knock the cannons off of a Scorpion or Wraith?
If your Jet Pack gets stuck can you survive by swapping armor abilities?
Can you melee through a hologram?
Can you pick up health packs through walls?
Can plasma launchers stick frag grenades?"