Here's part two of Stanford's Robert Sapolsky incredibly fascinating and illuminating lecture on primate sexuality (I posted part one last week). Sapolsky is a great lecturer: funny and engaging, and his material will make you rethink your relationship with your bits. Required viewing for anyone who has ever been horny, or who ever plans to be.
Prof. Robert Sapolsky on the Neurobiology of Primate Sexuality: Part 2
(Thanks, Avi!)