[Note: This is actually a Usenet posting to rec.arts.sf.written, regarding the Wild Cards series.]
ARMAGEDDON RAG was optioned for film shortly after it came out in 1983, by a writer/producer named Phil DeGuere. He did several drafts of a screenplay, but never managed to convince a studio to greenlight the picture. Phil was tight with the Grateful Dead, and planned to film the big Nazgul concert scenes at Dead shows.
No movie ever came of it... but a couple of years later, CBS tabbed Phil to revive THE TWILIGHT ZONE, and he asked me to do a script.
So in a sense, the unmade RAG movie was responsible for my career in television and film.