The Zelda Rig is a free Maya rig made by Christoph Schoch and is available on his Gumroad page
Zelda Rig
Link Rig
The Link Rig is a free Maya rig made by Christoph Schoch and is available on his Gumroad page
Grey Matter Gary
Grey Matter Gary is a free Maya rig from Squiggly Rigs
The Setup Machine
The Setup Machine enables Maya users to easily and quickly rig a wide variety of CG characters with just a few clicks. Generate a flexible, modern character rig in minutes saving you days or weeks of work
I Want to be an Animator
I Want to be an Animator is a Youtube collection of free Lessons, Tutorials and Tips about 3D Animation, mostly focusing on the basics and principles.
Fantasy Crocodile Rig (FREE)
Fantasy Crocodile Rig is a free Maya rig that has a super appealing design.
Rocket Girl Rig (FREE)
Rocket Girl Rig is a free Maya rig from the VMComix animation blog.
Jasmine Rig (FREE)
Jasmine Rig is a free rig for Maya that has a load of great features!
Animator's Resource Kit 