Really? Asimov and Clarke are the pillars of sci-fi!
One book for every author:
Asimov: Foundation (all books of the series)
Clarke: Rama (the firts book is a masterpiece and a movie with Villeneuve director is scheduled for next years)
Heinlein: Starship Troopers (yes, the movie is from this book)
Simmons: Hyperion books
Cixin Liu: Three Body Problem
Tchaikovsky: Childern of Time serie