Here are sites I've found helpful:
BBallBreakdown Coach Nick analyzes team and individual play, uses video to illustrate the fundamentals that make or break success. The site also looks at the business of basketball, including the reasons behind free agent movement.
FIBA videos. FIBA has hundreds of videos with international coaches teaching fundamentals. Coaches around the world rely on FIBA.
Wes Kosel's Film Room Wes is one of the 'go to' young coaches for video and Xs and Os breakdown. Here's a sample page.
Zak Boisvert Zak is another coach with a ubiquitous Internet presence. Here's a sample page.
Coach Daniel has a series of videos with team and individual breakdown.
Championship Productions Excerpts from basketball DVDs.
FastModel (with video) Wes Kosel doing some heavy lifting.
Miscellaneous A Bing search identifies many fascinating videos. Sample video