My favorite end-of-match celebration is an Elementalist starting Firestorm. The arms all akimbo swaying in the air makes me giggle every time.
"Throw yo hands up in the air and wave 'em like ya just don't care! Heyooooooo..."
Yes! Wall of fire is a good one too.
On topic, I've been recently doing some semi-solo AW'ing on perilous to boost my willpower. I always leave the lobby as public in case anyone on my friends list wants to join. But 90% of the joiners are either some idiots who have a lvl20 character with beginner gear and think they're perilous-ready or lvl1-10 character looking to leech xp. Like what the hell, if you're not going to promote your poorly built archer, fine, pls stay in routine where you belong. And leeching xp is just rude, when we come to zone 5 I usually go take a dump or watch a youtube video just to see how patient they are. Oh and one time there was this level 1 elementalist, I had killed a group of dogs and there was one left which had aggro'd to the ele. I had a good laugh watching him try to kill it for a solid minute or two before dying.
Yeah I know I could set to private to prevent this but what can I say, I'm an optimist.