I'm updating this mod because it hasn't seen any maintenance since the middle of '05. I've kept all of DrMuffin's emotes as they were originally scripted, and added in a few of my own making the grand total of new emotes 100!
To paraphrase the original author:
Burning Muffin Emotes adds a lot of emotes to the game that should be there, but are not.
This mod will allow you to use 100 new emotes in the same fashion as all the other emotes in the game. Type /<emoteName> to perform your emote (i.e. /hum).
Installation: Place the BurningMuffin folder inside your \World of Warcraft\Interface\AddOns\ directory.
Make sure that BurningMuffin is checked in the AddOns menu under the character-select screen and enjoy!