The Southern California Genealogical Society is offering Live-Stream webinars of some of the sessions from their Jamoree. You need a computer with speakers or a headphone to listen and watch.
The topics vary from military reserch to DNA. Read more and register from this link:
http://genealogyjamboree.blogspot.com/2013/05/scgs-genealogy-jamboree-to-offer-free.html