One of the most famous spoonerisms of all time occurred at the inauguration of Herbert Hoover as President of The United States. Harry von Zell, radio announcer: "The next voice you hear will be that of our new president, Hoobert Heever."

It was either WBAP Fort Worth or WFAA Dallas that had The Lightcrust Doughboys on at noon each week day in the '30s, advertising Lightcrust bread. Announcer: "Lightcrust, makers of the breast in bed ... " Then utter confusion.

I heard the following spoonerism related by one of our local sportscasters on the radio. He was talking about a radio announcer who was supposed to read a commercial for one of the local furniture stores named "Oak n Brass", but when he read it, it came out as "Broke n Ass"

Another example is an incident that happened to veteran newscaster (and Timex watch pitchman) John Cameron Swayze. During an interview on The Mike Douglas Show, he stated that on a radio show, he was making reference to a fellow journalist as a "noted woman columnist" but accidentally said "noted woolen communist".