Pro-crastination (stand V5 sit V7) at the "new-ish" Lakeview Boulders on Mt Tam in Marin County. Pro-crastination is one of the best problems on the mountain and the sit start is the most difficult up-problem {and it is still unrepeated}!?
First Ascent: Ken Ariza 2007!?
http://www.youtube.com/watch?v=Hw28R5XOsbc