Answering Machine - Space Time Continuum

A bubble in the space-time continuum has connected your line to a channeler in the 23rd century. Any message you leave will be broadcast into the future.

Answering Machine - Vancouver

Vancouver Coast Guard, may I help you. (Caller thinks that he/she accidentally dialed long distance. 

Answering Machine - Mr. Rogers

Imitating Mr. Rogers: Hello. I'm in the Neighborhood of Make Believe right now, so I can't come to the phone. Can you leave your name and number when you hear the sound of the tone? Sure... I knew you could.