
PvE:
Warrior: Leading large mobs back to squishies.
Ranger: Pulling by running into a mob then running back.
Elementalist: Tanking... without stances/enchants/etc...
Necro: Using Verata's Aura instead of Sacrifice, in an area with no enemy MM.
Mesmer: Super Egos of Doom, flocking like birds to "defend" their godliness.
Monk: 55ing Tombs... quite funny to see.
PvP:
Warrior: Running a tank build.
Ranger: None ~ as of yet.
Elementalist: Running fire nukes.
Necro: None ~ as of yet.
Mesmer: None ~ as of yet.
Monk: 55ing in PvP.
Disclaimer: All is opinion, and its my opinion :P