iDashboard v1.0 has been released by WyndWarrior, it’s an iPhone utility which mimics the widget functionality of Mac OS X.
A multi page dashboard for your iPhone! Features a world clock, a calendar, a weather widget, a working calculator, lockscreen dashboard, and double-tap Dashboard. Also will have available widget packs for download in Cydia. Customization features include: wall-papers with auto-dim and the ability to change wallpapers through the photo app.
Steven Troughton-Smith is developing a similar application, which is not yet released.