The Wonder Show began as a radio program for "kids of all ages" in the St. Louis area, airing on WEBU 660AM, KGLX 1220AM and WFUN 95.5FM between 1996-1999. In 2008, it was revived as a podcast, available for download on iTunes. As of 2014, it has run for over 200 podcasts.
In addition to his role as Mike the Radio Guru, Michael K. Anderson also provided the voice of the crusty old narrator, Phil the Vet. To give his voice that extra bit of world-weariness, he regularly recorded the narration at 5:00 in the morning.