Randy Pausch starred in Star Trek (Science Fiction Film). Star Trek (Science Fiction Film) is written by Gene Roddenberry
[Human]: I like the author Randy Pausch, could you recommend a similar author? [Assistant]: Sure, do you like the author because he wrote Science Fiction? [Human]: Yes, I like the genre Science Fiction [Assistant]: He wrote Star Trek. A cool fact for you, he is a Computer scientist too apart from being a writer. [Human]: I've already read Star Trek, can you recommend something else in the genre? 
How about reading the book Maze Runner? It was written by Randy Pausch and has a similar science fiction theme as Star Trek.