Charles Platt interviews all the big names in 1983. Fascinating reading. The UK lot do much bitching and sniping, while the US lot talk about guns and money. Pournelle is a classic right-wing gun nut, Vonnegut is sniffy about Farmer, Moorcock is sniffy about Christopher Priest, Platt himself is snooty about Sturgeon. Ellison is the suspect in an episode of Columbo.
The interview with PKD is pretty amazing - this is where he first speaks to a journalist about his encounter with a "non-human, rational mind" in 1974.
Be warned if you go after a copy: there were two volumes featuring different authors, and a confusing array of re-prints, some of which combined material from both. This one was published in 1987 by Ungar in New York, and includes an afterword where Platt (an English journalist who moved to the US) does a What Happened Next on all of the interviewees.
Platt himself is quite interesting - seems he got into personal computing in a big way and is now a devotee of cryonics.