Here'a classic clip from 2009 that's been resurrected in the vine community. It features Ike Nwamu and Deuce Bello connecting on a posterizing double alley-oop. Luckily for the defender who mastered the "stop, drop and roll fire safety technique" after getting dunked on, I still don't have his name.
Since then we have seen a few nice double alley-oops including this beauty from Jamal Crawford and Blake Griffin
and this fancy break with Shump and Smith.