Jonathan Coulton is a musician and internet celebrity. While in studio for Episode 312, he recorded a callback which has been featured in many subsequent episodes. The lyrics are "This is The 404 m'er f'ers. The show where we all sing songs."
- Episode 24 - 1/29/08 - Where today, the cake is most definitely not a lie
- Episode 312 - 4/2/09 - Where Jonathan Coulton nude pics Obama iPhone