Bob Shaw’s famously hilarious “Serious Scientific Talks” have never been collected in a single volume – not even now, alas, because despite hopes that this ebook could be titled *All the Serious Scientific Talks* we have yet to trace the final talk delivered by Bob at the 1995 Eastercon (Confabulation) and the Glasgow Worldcon later that year (Intersection). As it stands, the ebook contains fifteen Bob Shaw speeches, five never before collected. First published as an Ansible Editions ebook for the TAFF site on 1 November 2019. Cover art by Jim Barker from the 1979 chapbook *The Eastercon Speeches* (five early talks), edited by Rob Jackson.