1) upload to YouTube and then embed in your site - we've done this with a couple of vids including:
Mad Max 2.0 - The fight for modern web design : iOnline - Musings of a Perth Web Designer
or
2) export/convert .mov to .flv and present in Flash - like we've done with our portfolio animation:
Website Design Perth, Web development, Ecommerce solutions - Generator
Good luck!