Can anyone tell me how to make a human voice sound like that at 1:59-2:03, approximately?
"The inner machinations of my mind are an enigma."
This video is a remix of sorts of a famous Spongebob episode.
It's made with a vocoder. Most comnercial DAWs have a suitable plugin included. In a nutshell, the process involves modulating a tonal sound, typically a synth pad, with either live or prerecorded speech. A quick search will point you to many good sources and tutorials.
Yup voice recorder plugin, I made some hilarious goat sounds synthed them into a track.
You can do it by using your voice recorder in a proper way.
Audacity has a free vocoder in it.