Mediterranean Katydid (Phaneroptera nana), Noe Valley, San Francisco, California - 16 September 2012. Thanks to D. Ferguson and Bug Guide for the identification - David says this is a "nearly mature male". This is an introduced European species found only in California and New York. I found it on a flower near our apartment.

Brown-spotted Bush-cricket (Tessellana tessellata), Oakland, Alameda County, California - 2 July 2012. Found inside a building, chilled, photographed and released. This is an introduced species native to Europe. ID confirmed by David Ferguson from images on Bug Guide.

June 13 2010

I have never seen a grasshopper this large before I have seen some near as long not sure what this is but for reference the leaves in this image are about 1.25 inches long or 32mm, This wasn't just long but huge body very stocky.