Here is a list of the robot that I have discovered so far as well as where you can find them.
Amazonbot: Get an Amazon search by typing amazon:keyword (ex. amazon:camera) amazon-withwaves-com@appspot.com
AmazonMP3bot: Get an Amazon mp3 search by typing music:keyword (ex. music:nirvana) amazonmp3-withwaves-com@appspot.com
Bloggy: Manage all of your google blogs blog-wave@appspot.com
BotURL: Replaces a full URL with a shortened hyperlink (ex. http://www.google.com becomes [google.com]) boturl@appspot.com
Bouncy: Remove bots from your wave bouncy-wave@appspot.com
Eliza: A bot to talk to when nobody will elizarobot@appspot.com
Emoticony: Make emoticons in your wave emoticonbot@appspot.com
Graphy: Creates a flowchart when the correct commands are typed (go to this website for a demonstration) graph-wave@appspot.com
Hangman: Records and plays Hangman games in a blip wavehangman@appspot.com
Madoqua: Embeds waves into blogs blog-bot@appspot.com
Polly: Create a poll for your wave polly-wave@appspot.com
Read-Onlie: Makes your wave read-only (I haven't actually tested this one) readonliebot@appspot.com
Rssybot: Watch RSS feeds from Google Wave (doesn't update after you install it) rssybot@appspot.com
Sweepy: Automatically deletes empty blips sweepy-wave@appspot.com
Syntaxy: Syntax highlighting for waves, put #!
Tweety: login to your twitter account from Google Wave tweety-wave@appspot.com
Talk Like A Pirate: Translates all your blips into pirate language. YARRR! (more info) talk-like-a-pirate@appspot.com
WaveAlpha: Allows you to query Wolfram Alpha's Computational Knowledge Search Engine (ex. [answer to life, the universe, and everything]) py-robot@appspot.com
WaveGroupy: Group aggregator for public waves wavegroupy@appspot.com
WaveVotely: Allows you to vote public waves up or down wavevotely@appspot.com
Wikify: Creates a link to wikipedia via
Yelpful: In wave interface to Yelp.com yelpful@appspot.com
Watexy: Allows you to add equations to Wave watexy@appspot.com
Add any bots that you have that aren't on this list.
