Binding a command to a mouse-button
Launching programs by clicking extra mouse-buttons is somewhat straightforward to get going if you install xbindkeys and xbindkeys-config.
Hm, for some annoying reason xbindkeys doesn't work if I start it from the Startup Applications (it runs, but nothing happens when I click the mouse button). If I start it from an xterm later, it works. Gah. ⊗