Challenger Jacobus is a Youtube playlist made by Eric Jacobus where he performs movesets from beat-em-up games in real life. Great resource for animation reference!
GreenScreen Animals is an extensive library of domestic and exotic animals video footage in high definition.
AnimSelector is a free and super simple Maya script that allows you to quickly setup selection groups that you can later pickup from a GUI or assign to hotkeys.
Fantasy Crocodile Rig is a free Maya rig that has a super appealing design.
Rocket Girl Rig is a free Maya rig from the VMComix animation blog.
Jasmine Rig is a free rig for Maya that has a load of great features!
Sakugabooru is a huge animation archive used by fans and animators alike to upload and view animation clips from anime movies and shows.
SloMo Ref is a free collection of slow motion animal reference videos on Youtube
Endless Reference is a Youtube channel that focuses on animation reference. Lots of great human locomotion videos from different angles