Alarmy - World's most annoying alarm app
Five Icon Switcher - This puts more icons into the iOS4 multitasking bar, instead of the usual four.
Galarm - Social alarm clock and reminders
Cylinder - Sexy homescreen icon animations
Free Alarm Clock - Free Alarm Clock is a free, full-featured and user-friendly computer alarm clock for Windows.
Springtomize - Tear down the walls