Khan Academy Biology Lessons - Videos on YouTube which have been recorded by Salman Khan.
The Stanford School of Medicine - Lectures on human biology, health and disease, medical research, and health care. The lectures are available through iTunes and YouTube.
The Biology Place - Animations and interactive questions
Biology Movies and Animations - John Giannini's short animations of biological processes
The Virtual Lab series - 5 Labs include identification of various bacteria and inherited diseases of the heart, circadian rhythms, neurophysiology, antibodies and immunology.
Watch these short (6-7 minutes each) YouTube videos about BBC's Science-related databases and ebooks to help you with your research!