Originally an LP (remember them?) it was called
What Goes Up Might Come Down and was David's after dinner speech to a group of bankers (correct spelling). He was guest of honour at our annual Aviators Christmas Dinner in Kent a short while back, and was still in good form then. He would make an excellent GOH at a Gatbash,
IFR.
Trust you to start a thread on two different forums,
Stan 
For those who haven't gone to the ATC forum, you can obtain the CD
here, and read a short bio of David Gunson
here.
Naturally, I own an original LP :o