Re: The nicest thing a teammate has ever done for you?
Well, I know @Fr3dY2 has gone out of his way to revive/respawn me so SOOO many times, we both lost count.
Also, @DoYaSeeMe has let me use him as meat shield several times, which is nice.
And there have been many, many randoms who have stood out as better people through their actions, like giving their secondary weapon and ammo when respawning, tossing a few extra heals when prompted, acting decent over voice or text chat...