Not much attention was paid to the many moon missions in the years following the first lunar landing -- until something went wrong. Apollo 13 is based on the true story of NASA astronauts Lovell, Haise, and Swigert, who encountered massive technical difficulty when returning to Earth. The phrase "Houston, we have a problem" originated on this mission and is delivered by Tom Hanks's Lovell in this edge-of-your-seat movie. The rest of the cast includes Bill Paxton, Kevin Bacon, Gary Sinise, Ed Harris, and Kathleen Quinlan. Apollo 13 was a summer blockbuster, raking in more than $175 million at the box office and scoring two Oscars.