Bboy Moves: Toprock variations 

This video shows the Toprock move performed by all the characters in B-Boy the Game by FreeStyleGames.
It showcases a lot of variations of toprock and should provide you with a base of different styles that you can use in your own breaking.
Music is from B-Boy the Game Soundtrack: Juice (Know the Ledge) by Eric B & Rakim
Edit:
Bboy Moves webpage has been discontinued. Hope you still found this video useful.