Hey everyone, I just discovered a really cool bug. If you grab a body with the super grav gun and switch weapons while holding the body, the weapon you are holding will have the grav gun powers. I did this in garrymod v6 so I don't know if it works in any other HL2 game/mod.
Pic- http://img.photobucket.com/albums/v62/OpposingForce/supercrowbar1.png
Pic- http://img.photobucket.com/albums/v62/OpposingForce/supercrowbar1.png