Disclaimer: I have little kids. I don't get out much. Most of the media I consumed in 2015 was released before that.
I thought for sure it was going to be Seveneves, but then I read The Martian. The latter has less wild SF stuff, but is pretty much great all the way through. I know I cracked that it's the novelization of a spreadsheet, and it is, but you could say that about pretty much any novel, really. And it's short.
Number of the Beast by Robert Heinlein. It's 110% fan service, almost a parody of post-Starship Trooper Heinlein. It was so ridiculous I looked up to see if there was any defense of it. There is! Link
It's an interesting argument, but it only got me to page 100.
Probably Beautiful Africa by Rokia Traore, but the new-to-me record I listened to most was probably The Terror by The Flaming Lips (psychedelic rock) or Exhibitionists by Superhumanoids (dream pop, or something). Spotify playlist of stuff I've really liked recently
Mad Max: Fury Road, for turning everything up to eleven, and then continuing to turn the dial until the dial falls off and gets run over by a flaming Frankenbulldozer.
Dallas Buyer's Club. I really wanted to like this anti-FDA movie, but its "and then THIS happened" structure and ugly cinematography put me off. Also, I kept waiting for Leto's character to be something other than a one-dimensional tragedy. I am still waiting! The movie is watchable, mind, it's just that I don't get to see many movies so it's the worst of a list which is already heavily filtered for quality.
Rick and Morty season 2.
Best New TV:
Other Space. Far into the future, space exploration is just a shitty government job. Cast includes Joel Hodgson and Trace Beaulieu (as a robot).
Sharing kid pictures with their grandparents and getting fawning commentary almost instantly.
"This headline outrages me so much that I am going to share it without checking whether it is true or not."