Fall video previews: 'Fringe,' 'Dollhouse,' more

THR.com just launched its 2008-09 pilot preview video player that includes many of the trailers screened at the broadcast upfronts this year.  See clips of Fox's "Fringe" and "Dollhouse," ABC's "Life on Mars" and "Opportunity Knocks," CBS' "Worst Week"  and "Eleventh Hour," and more. Go here.