Sites:
LM Fanclub - Sven Markus' LM Fanclub webpage
Lord Hypno - A good collection of real mall LM photos!
Little Doll Guillermina - Dark NS LM Website, amazing galleries of new LM photos
German Living Mannequin/Doll site - A misnamed German website of full of public performance photos
Living Dolls/LM - A generic photoset of living dolls and LMs
Unity Productions - Living Statue performers. Posing motionless while in all white costumes!
Mannequeen - A site showcasing Russian Living Mannequins and motionless performers.
Etro - A page showing 60 images from a fashion show that was performed using living mannequins on moving platforms.
Oxford Valley Teen Board - A shopping mall youth group which performs in freeze modeling in the mall on a regular basis.
Lehigh Vallery Teen Board - Another Teen Board site, with mannequin modeling performances.
Montgomery Mall Teen Players - A 3rd group, with the same type of material.
Mannequin Man - Mark Burman's site showcasing his amazing mannequin modeling work.

References:
LTBSA Story Archive - Living Mannequin and Freeze Modeling Fiction
WK's Media Guide - Information on Mannequin Modeling and Freeze Modeling in the media, including movies, TV, and more.
Living Statues - A Yahoo! Group for those performing Living Statue work
Viking's Stuff - A Yahoo! Group for fans of frozen females