I created a Summerboard theme around the Star Trek LCARS interface. This theme is based on the original iPhone theme by Kevin Rohrman (firstname.lastname@example.org).
The iCARS theme includes a wallpaper you can put in /Library/Wallpaper to set the lock screen. This theme requires that you load and order your applications very specifically. You must read the details after the jump or you will not get this theme to look like anything but a jumbled mess.
The First Screen
The Second Screen
The Third Screen
The iCARS theme requires that the following application be loaded and visible on your iPod Touch or iPhone:
Music, Videos, Photos, Finder
Safari, Mail, Calendar, Contacts
YouTube, Stocks, Maps, Weather
Term-vt100, Apollo, Colloquy, Notes
Preferences, SMBPrefs, Customize, SysInfo
Installer, Stumbler, Clock, Calculator
SSH, VNsea, PDFViewer, weDict
Books, gpSPhone, NES, psx4all
RSS, Tetromino, iBLackjack, Sketches
iLevel, iPhysics, iTunes, ToDoList
Here are shots of the application ordering in Customize -> Icon Display Order -> Manual Reorder:
Finally, here is how you setup your prefs in Summerboard.
Download this theme below: