I must provide some personal perspective for this... →[More:]
In the late '70s/early '80s, after giving up being a full-time Radio Personality and/or Programmer (TOTALLY different from a Computer Programmer, although I didn't mention that on subsequent resumes for IT jobs), I did get some part-time $$$ by writing jokes for disc jockeys, mostly in a 'jokeletter' I published under the title "Wendell's Weakly", but some custom bits for major market stars who liked my sense of humor, most notably Gary Owens (Laugh-In Announcer, original Space Ghost, Powdered Toast Man, a million commercial voice-overs and 30+ years in LA radio) who gave me the unsolicited endorsement in an radio trade paper "Wendell is funnier than Jack Lord and Lorne Greene combined." I was flattered. I consider "Book 'em, Dan-O" one of the funniest lines ever said on TV.

I totally quit the radio funnies at the end of the '80s, so I was quite disturbed to see, through this video, that by 2000, DJ jokewriting had been taken over by child labor (at least in the UK, but it has to be at least that bad in the USofA).