Cell Motility and Shape: Microfilaments - A brief, yet good summary of cell motility and shape. Contains good references for further information.

Cytoskeleton, Cell Motility & Motors - BioChemWeb - Excellent site containing anything you would ever want to know about everything cellular. Highly recommended.

Cytoskeleton Research Homepage

Wikipedia: Flagellum - Good site for general information regarding the flagellum.

Molecular Machines - Great site for illustrations and animations regarding cellular motility.

More Bacterial Flagellar Information - A great site about the motility of E.Coli

Sex, Wild-Style - an interesting article about animal sexual selection

Eyelashes Up Close - An article about cilia's role in disease

Sperm Sparring Spotted - An article about competition between sperm of different males

Sperm Motility Secrets Revealed -

Wikipedia entry on Don W. Fawcett - A noteable sperm researcher and founder of the American Society for Cell Biology(ASCB).

A Downside to Female Promiscuity

Along Came a Sadistic Spider - an article about traumatic insemination in spiders

Airway cilia taste toxins - an article about cilia in the airway that can detect toxic substances 

Robocilia at work - an article about manmade cilia

What is Sperm Morphology? or More about sperm morphology plus some related information about infertility

Catch the Sperm - Use a condom gun to catch the sperm and diseases before they pass.