If you have $299 laying around, celebrities like Will Ferrell, Tom Hanks and Derek Jeter will do personal voicemail greetings for you. Can you imagine William Shatner telling your friends that you can't come to the phone and wait for the beep?

Now where does the money go to? It all goes the charity Autism Speaks. Make sure you do it between Dec. 3 to Dec. 9th. A limited number will be made.

For more info...CLICK HERE

PHOTO: VIDEO SCREENSHOT