hand held track ball?

[Delta976]

Does anyone make a wireless trackball (or similar device) than can be hand held?

kinda like this

 

[Trizoy]

http://www.geeks.com/details.asp?invtid=FDM-M32-H

http://www.geeks.com/details.asp?invtid=FDM-B4D-RF&cat=MOU

 

[99F]

^that hurts my thumb just lookign at it

 

[XxSNIPERxX]

damn that thing looks annoying!! Are they hard to use??

 

[INTELCRAZY]

I love my Logitech Trackman, I like a trackball better than a mouse