SSHTM (SSH Tunnel Manager)
I was going to write one myself and found this neat tool that saved a lot of work. SSHTM for Mac OS X allows you to create and mange SSH Tunnels.
Simple and Neat. (there are a few other utilities by the same person)
Too bad it doesnt show up on a google search, but found this mentioned in an article that showed up in the search – this 2005 article is about using ssh for secure wireless email (http://www.stopdesign.com/log/2005/02/07/secure-email.html)