In March 2002, Mike Murphy visited the San Francisco Whip Crackers for a workshop and demo.
Besides giving instruction to the group, Mike demonstrated a number of fine double handed routines using stockwhips. Here is a clip of Mike performing "Dan's Helicopter" : m_murphy3.mov
You will need QuickTime or I-View or some other media player to view this file. It's a large file, so unless you have a broadband connection, it will take time to download.