Not to be confused with his later series. In this series which was produced from 1969-1971, Bill plays a high school gym teacher named Chet Kinkaid. The show was in the list of top rated shows its first year and perhaps could of gone on for a 3rd inspite the ratings going down some the 2nd year. However as you can see the series didn't use a laugh track in which NBC wanted to have but Bill was against it, and since he only signed a 2 year contract with the network, they decided to axe the BCS after the 2nd year.
Here's a rather interesting episode from it.
Also the theme song Hicky Burr was rleased as a single but didn't chart.