Long before I had heard of Autodesk, I came across John Walker's site in the late 90s because he was the author of Speak Freely, an early Internet voice chat program.
Speak Freely was the best, and saved me literally thousands of dollars when I was a post-doc in Australia and my fiancee was still in Canada. I once used it to help with an interview of wearable computing pioneer Steve Mann and an Australian journalist and had to fix an endianess issue to do it.
