We use a bunch of nicknames on this site from the team's nicknames for each other so I thought it would be interesting to compile them all and the background to them:
Evgeni Malkin - Geno (short for Eugene)
James Neal - Real Deal
Chris Kunitz - ??? can't think of one, might have heard Kuny?
Jordan Staal - Staalzy I think is the player's nickname for him
Matt Cooke - Cookie (sometimes expanded to Cookie Monster)
Tyler Kennedy - TK
Marc-Andre Fleury - Flower (Fleur in french)
Sullivan - Sully ?
Mark Letestu - Testtube
Pascal Dupois - Duper
Paul Martin - Paul Bearer
Michalek - Big Z
Brooks Orpik - Free Candy, from a player interview in playoffs. Great videos on youtube if you search.
Kris Letang - Tanger
Eric Tangradi - was tanger2, lately its been E-train
Please feel free to fill in the blanks and players I'm missing.