Inspirational Demo Reel corner!
Rigging
Renato Polimeno 'Girl Rigging'
Ozgur Aydogdu 'Cenk': http://vimeo.com/38257543
David Corral: http://vimeo.com/9124065
Eric Legare: http://vimeo.com/3642513
Iker de los Mozos: http://vimeo.com/10942354
Judd Simantov: http://vimeo.com/18140376
Kevin Zheng: http://www.youtube.com/watch?v=Hg6jvHjvHGk
Great collection of Rig Reels on Vimeo
Animation
Geoff Wheeler:http://www.vimeo.com/13509658
Felix Sputnik (nsfw)
Modeling