This alarm clock from Hammacher Schlemmer gave me a chuckle...

This digital alarm clock launches a rotor into the air that flies around the room as the alarm sounds, flying up to 9' in the air, and will not cease ringing until the rotor is returned to the alarm clock base, compelling even the most stubborn sleepers to get out of bed on time. The alarm clock has a continuous snooze function that rings every seven minutes for an entire hour, an easy to read LCD, and a six-button control panel for ease of programming. 3 3/4" H x 5 1/2" Diam.

(7 oz.) Item 73755 ................... $39.95

Click (or cut/paste) the link below for a few other styles:

http://www.hammacher.com/publish/73755.asp?source=NEWS2607A&cm_ven=WC&cm_cat=20070410_News26&cm_pla=BYR&cm_ite=73755_Flying_Alarm_Clock