A couple of my favorite videos. I'm a big fan of healer vids.
Nidi 2100+ 3vs3 Priest/Mage/Warrior By Panatje
Warrior/Mage/Priest 3v3 from the Priest POV. Also has an excellent 2v2 clip Lock/Priest vs Druid/Warrior at the end.
World #1 2v2 Druid/Hunter By Apathy
Druid/Hunter from Druid POV.