Prime

Learn more about it here, courtesy of Gary Wee.

Optimy Classic

Learn more about it here, courtesy of Gary Wee.

Here's an example:

Toon Spidey

Learn more about it here, courtesy of Gary Wee.

Spider-Man

Learn more about it here.

Pierre

Awesome looking rig by Ashwin Inamdar. Find out more about it here.

Demon

Another really cool rig provided by Justin Kirk. You can download it here.

Tresher

Justin Kirk is providing this cool looking rig. You can download it here.