Exposé, Safari, Login, Spotlight and Misc
The Exposé tab allows you to enable to show active screen corners if you have one, and opt to enable a feature an Exposé blob and allow windows to minimize to the desktop instead of the dock.
The Safari tab lets you customize some navigation hidden settings like automatically open PDFs within Safari, disable the Safari cache. You can also enable miscellaneous options - like turning the debug menu on, turn off displaying bookmark icons, or show URL links in tooltips. You can also set printing options, the number of items in your history menu, and number of days for Safari to keep history details.
The login tab allows you to set a custom message in the login window, disable the Restart, Shut Down and Log Out commands from the Apple menu and opt to hide the Sleep, Restart, and Shut Down commands in the Login window. Here you can set what list of users to display, and select a start up mode of your choosing.
The Spotlight tab allows you to disable certain options regarding indexing, Dictionary search and calculator capabilities in Spotlight. You can even opt to hide the spotlight Icon from the top right corner.
Lastly, the MIsc tab contains several tweakable entries for Disk Utility, Terminal, Mail, iTunes, Address Book, QuickTime Player, Apple Remote Desktop, Backup, iCal, iChat, and Help Viewer, X11 and Screen Sharing.