Boris and Arkady, Russian authors difficult to get in print in English (in the UK).
Masters of using the naturalistic but truly alien to reflect on human fundamentals, most notably in Roadside Picnic [ISBN: 0575070536 ], filmed by Andrei Tarkovsky (who also filmed Lem's Solaris [[ISBN 0156027607]]) under the title Stalker. -- KeithBraithwaite
Uhh. It's quite new for me - to call Andrei Tarkovsky a Stalker. But nice... Why not Solaris (by Stanislav Lem)... -- AndreySidorenko