Richard Garriott owns two Sputnik spacecrafts.
Richard Garriott owns the Lunokhod 2 a Russian lunar rover. That makes him the only private owner of a terrestrial object on the moon.
Owen Garriott was one of the first six scientist/astronauts to go to space. Previously only test pilots became astronauts. Once Owen was selected he had to train as a test pilot.
Owen Garriott's 60 day Spacelab flight more than doubled the previous record for length of human spaceflight.
The haunted houses that Richard threw at his home, Britannia Manor, in Austin, became so popular that people would camp outside of his house for two weeks leading up to Halloween.