Freeware Programs: Arboreal
Romeo 0.9.3 Control your Mac via cellphone. Romeo allows you remote control of your mac via Bluetooth and a compatible Ericsson phone (t39m, t68), controlling programs such as iTunes and DVD Player, as well as presentation applications.
Spanner 0.7 \Menubar item to control hotcorners. Spanner is a preference pane that allows you to assign custom launch or quit actions to any application on your drive.