If someone did this already, I haven't seen it, so I'm going to go ahead and do this.
But first, for those of you that don't already know, to perform an emote with a slash command, you can type /e or /em or /emote followed by the emote you wish to perform. for example: /e cry makes your avatar appear to cry.
Some of these are constant emotes, that loop until you move or activate another emote. these are marked with a C. Some emotes are accompanied by text in local chat, the text is colored blue.
Here's the list:
afk - avatar sits cross legged and says "sitting down" C
alert - look around anxiously C
attention - Stand at attention C
beckon call - others towards you and say "Come here"
Bloodwine ***PRE-ORDER BONUS*** - raises a mug and drinks from it "'e' pa' jaj law' mo' lal puS"
bye - Big wave goodbye (NOTE: same as "hello" and "wave" emotes.)
charge - "charge"
cheer - over the top cheer, excited "Yeah!"
combadge- activates combadge
cough - over the top (as in it looks like you're dying) cough
dance - C
dance_club - C
dance_legkick - C
dance_raisetheroof - C
dance_robot - C
dance_sidestep - C
dance_snake - C
dance_runningman - C
dance_wavehands - C
engage - thrust your fingers forward, like Picard "Engage"
exile - This one is cool! Avatar says"Hur'q!!" in Klingon, then crosses his arms across his chest, and turns around and stays turned around. (those familiar with TNG and Worf will remember this move when he was "exiled" from the Klingon empire). C
facepalm - avatar puts his left hand up to his forehead.
headbutt - grabs an invisible opponent, head butts them, and then yells angrily. While saying "Left side! Strong side!" (why? I have no idea)
hello - Big wave (Note: same as "bye" and "wave" emotes. DOES NOT work with just "hi" for some reason.)
jumpingjacks - C
kai- Pulls out a Klingon Knife, and thrusts it into the air while saying "kai kassai, Klingon!"
Khaaan! ***PRE-ORDER BONUS*** - shakes in anger, and then yells out "Khaaan!"
laugh- belly laugh.
mokbara - avatar begins performing the Klingon equivilent of Tai chi, after saying "yIn Daq joH'a' tuq reH" C
no- emphatic no.
noway - more emphatic no.
point - dramatic point.
ponder - dramatic pondering, as if studying a scientific equation and trying to figure it out.C
pushups - C
qapla Klingon greeting/salute
salute Regular ol' salute C
sit Sit crosslegged. C
sitbridge - Sit in a chair, but looking authoritarian. C
sitcaptain - Sit with right arm up, occasionally push buttons on armrest. C
sitchair- sit casually C
sitlounge - sit on a lounge chair. C
sitstool - sit on a stool. C
sleep - sleep...standing up apparently. C
stomp - look down, see a bug, stomp it dead with right foot while saying "Ugggh!! Die!"
stovokor - Perform the Klingon death ritual over a fallen comrade, while saying "mupwI' yI'uchtaH!!"
taunt - avatar puts his fist into his palm a few times, then points, and gestures for whomever he is taunting to come over (Neo style).
tricorder - pulls out tricorder and says "Space is like sooooooooooo big" (which makes me wish there were a "puke" emote, which there isn't unfortunately)
tug - avatar pulls down the front of his shirt, and then adjusts the sides. Otherwise known as "the Picard Maneuver".
wave- big wave over heads (note: same as the "bye" and "Hello" emotes)
yawn - Avatar yawns.
yeah - avatar gives a thumbs up and shakes his head.
yell - avatar cups his hands around his mouth, and yells twice.
yes - avatar nods.