Check the following web sites for tutorials and animations on muscle anatomy, muscle physiology, and related topics.
Muscle Tissue, Cells, and Physiology
http://health.howstuffworks.com/adam-200006.htm
http://www.wisc-online.com/objects/index_tj.asp?objid=AP2904
http://www.getbodysmart.com/
http://www.getbodysmart.com/ap/muscletissue/menu/animation.html
http://www.getbodysmart.com/ap/muscletissue/structures/menu/animation.html
http://www.getbodysmart.com/ap/muscletissue/contraction/coupling/tutorial.html
http://www.getbodysmart.com/ap/muscletissue/contraction/contractioncycle/tutorial.html
http://highered.mcgraw-hill.com/sites/0072437316/student_view0/chapter42/animations.html
http://www.sci.sdsu.edu/movies/actin_myosin_gif.html
http://harveyproject.science.wayne.edu/development/muscle/twitch~1.htm
Muscle Arrangements and Body Motion
http://science.nhmccd.edu/biol/ap1.html
http://science.nhmccd.edu/BioL/ap1int.htm#muscle
http://health.howstuffworks.com/medical-animatio-channel.htm
http://health.howstuffworks.com/adam-200125.htm
http://health.howstuffworks.com/adam-200005.htm
http://face-and-emotion.com/dataface/emotion/expression.jsp
http://face-and-emotion.com/dataface/expression/muscles.jsp
http://www.getbodysmart.com/ap/muscularsystem/menu/menu.html
http://www.ptcentral.com/muscles/
http://www.rad.washington.edu/atlas/
http://www.rad.washington.edu/atlas2/
http://en.wikipedia.org/wiki/List_of_muscles_of_the_human_body
http://www.meddean.luc.edu/lumen/MedEd/GrossAnatomy/dissector/muscles/muscles.html
http://www.meddean.luc.edu/lumen/MedEd/GrossAnatomy/dissector/mml/mmlregn.htm