It can automatically mount a Truecrypt drive or (on untrusted computers) NOT mount, or mount read-only. Plus lots of other features.

To quote

“geek.menu is a fork of the PortableApps.com Menu, adding support for
security features, internet searching capabilities, category support,
autorun apps, and much, much more. It can serve as a replacement for
the portableApps menu.”

Download from Sourceforge http://sourceforge.net/project/showfiles.php?group_id=209346

The portableApps system is intended to allow you to take all the programs you usually use with you on a USB flash drive and not rely (or save setting) on the computer you’re using.