“This is not a documentary,” Alfonso Cuaron said of his new movie Gravity to CollectSpace.com. No kidding. Nobody in a documentary talks the way George Clooney and Sandra Bullock do in this spectacular yet sometimes silly space-set thriller. But I’d love for it to be a gateway to some great documentaries about astronauts and NASA missions and the like, so I’ve compiled a list of favorites that are relevant to the plot. Sure, I could have opened this week’s Movies to Watch list to fiction films, too, but there is less need for me to highlight obvious movies like Apollo 13 and Space Buddies. Also, I’d like to use this opportunity to give a shout out to Dan Schindel’s Doc Option column over at our sister site Nonfics. This week he chose to recommend two true stories for your listening pleasure that relate to Gravity because they involve spacewalks gone wrong. Since he (cleverly) didn’t go with one of the docs I’d have picked, now I get to list them all below.