I watched The Astronaut Farmer tonight. I got a kick out of it when one character said that liftoff was at "Zero hour, 9 am."
Last weekend I was watching Season 1 of Heroes, in which George Takei had a short recurring role. After his first appearance, he gets in a car and drives away--the license plate of his car was NCC1701.
I love it when I get the inside jokes in shows.
If you want a hilarious movie that's nothing but inside jokes, mostly about science fiction, watch Free Enterprise. Shatner plays himself.