Near the middle of the main section of WWI, starting off a pointy block. From the block, clip a bolt and boulder (carefully!) to the big ledge. The route continues from here, making big moves on big holds to an anchor. This makes a fun 11b by itself (called Psychowussy) and is a popular warmup. But keep going. The route continues up to a rail on the right, then jogs left on slopers to a shake. Depump a little and fire the crux: a sequence of sidepulls, gastons, and a deadpoint to an edge followed by a toss to a bucket with your feet just above the bolt. Makes for fun, clean airtime when you miss the throw.
I think the route you are thinking of is Psychosomatic. With the shorter version being called Psycho Wussy! Great route props on the extension. Psycho Wussy is a definatly a good ride too.
There are 2 more extensions from the top of the full-Psycho. The line that trends to the right is Flatliner (.13c) and the left/direct is a new .14b (longer than Black Ice!) that was put up last year, 2005, by Mister Si aka Josh.