/afk No text shown. (a)
/agree 'your character name' agrees. (a)
/attention 'your character name' comes to attention! (a)
/beckon 'your character name' beckons. (a)
/beg 'your character name' begs. (da)
/boo 'your character name' scares you! (a)
/bored 'your character name' is bored. (a)
/bow 'your character name' bows. (a)
/bowhead 'your character name' bows his head. (a)
/catchbreath, /breath 'your character name' stops to catch his breath. (da)
/clap 'your character name' claps. (a)
/cheer 'your character name' cheers. (a)
/congrats 'your character name' offers congratulations. (a)
/cough 'your character name' coughs. (a)
/dance 'your character name' starts dancing. (ca & da)
/doh 'your character name' smacks his head. Doh! (a)
/doubletake 'your character name' does a doubletake. (da)
/drum, /drums 'your character name' plays the drums. (ca & da)
/excited 'your character name' is excited! (ca & da)
/fistshake 'your character name' shakes a fist angrily. (a)
/flex 'your character name' flexes. (da)
/flute 'your character name' plays the flute. (ca & da)
/goteam 'your character name' cheers wildly, "Go Team!" (a)
/guitar 'your character name' plays a mean air guitar. (ca & da)
/help 'your character name' requests help! (a)
/highfive 'your character name' says, "High Five!" (a)
/jump 'your character name' jumps. (a)
/kneel 'your character name' kneels. (a)
/laugh 'your character name' laughs heartily. (a)
/moan 'your character name' moans. (da)
/no 'your character name' says, "No." (a)
/paper 'your character name' plays paper, rock, scissors.(a)
/pickme 'your character name' says, "Pick me!" (a) {Some do not have an animation}
/point 'your character name' points. (a)
/ponder 'your character name' ponders the situation. (da)
/pout 'your character name' pouts. (da)
/ready 'your character name' is ready for action! (a)
/roar 'your character name' roars. (a)
/rock 'your character name' plays paper, rock, scissors.(a)
/salute 'your character name' salutes. (a)
/scissors 'your character name' plays paper, rock, scissors.(a)
/scratch 'your character name' scratches. (da)
/shoo 'your character name' shoos you away. (da)
/sigh 'your character name' sighs. (a)
/sit No text shown. (a)
/sorry 'your character name' apologizes. (a)
/stand No text shown. (a)
/taunt, /rude 'your character name' taunts you. (da)
/violin 'your character name' plays the violin sadly. (ca & da)
/wave 'your character name' waves. (da)
/yawn 'your character name' yawns. (da)
/yes 'your character name' says, "Yes." (a)
/age special *
/deaths special **
/health special ***
Emotes with (a) after the shown text are emotes that currently have character animations. Those with (ca) or animations that loop. The ones with (da) are emotions that differ by gender and/or class. All other emotes show no animation, they only display the text.
* /age shows the amount of time you have played your character in hours and minutes.
** /deaths shows the number of times that character has died.
*** /health shows you your current health and energy out of your maximum health and energy.
[Note: this is basically the same list of emotions posted on http://www.gwonline.net/, plus a few that they either missed or did not know about. In addition, my list is more complete than the Prima's emotion list,

{Additional Notes: /chest no longer works, and /roll was removed by developers due to casino runners}
Feel free to post others that I didn't know about!
{Note for Admins: feel free to make a sticky, I guess if you want to}