Looking For Voice Changing Software

Hello there I am looking for software that changes your voice but does not change
it so that it sounds like a robot. I am looking for something that will make it sound like another person.
Any product suggestions?

You answers are appreciated.
P.S. Does anyone know where I can download recommended software for free?

I have used AV Voice Changer 6.0 Diamond...while it can make you sound like a robot depending on the settings, it also has a voice morpher which can be used to try and imitated other peoples voices. Their are a lot of options with this software and if given the right amount of time tinkering with it, you should be able to get your desired results.

sales page

I downloaded my copy free off of isohunt using bit torrent...