At the end, when the lone seed is flying through the air and lands, Burt stamps on it and moves away. He should have picked it up to threw it into a garbage can as it would have spread again
Tyler: Next time remind me to have second thoughts.
Cletus: You are without a doubt the luckiest man I have ever met.
Larry: Tell me about it. Every time I'm with you guys I have to pinch myself.
Rosalita: You were born for collecting action figures, not being one.
Cletus: They called me eccentric!
Tyler: Well... ummm, you are eccentric. (pause) Just in case you needed a second opinion.
Rosalita: I show up on your web site, I have friends - they will find you.
Garrett: Concussion grenades – that must be Burt Gummer.
Dean Norris does not appear in this episode.
Note that Larry's last name is "Norville" - the same as Shaggy's first name on Scooby Doo.
Notice Larry's "Battlestar Galactica" T-shirt. SciFi Channel, which Tremors appears on, was planning a remake/revival of the original 70's series as of the time this episode premiered.
Larry: Hey, you guys in the old lab ever do any experiments with time travel?
Addressed to Christopher Lloyd's character Cletus - Lloyd played time travel scientist Dr. Brown in the three Back to the Future movies.
Larry: You know, there's this episode of Bab 5 where Commander Sinclair calls up some data on a monitor...
Referring to Babylon 5 - particularly funny since actor Richard Biggs (Garrett) played Dr. Steven Franklin on that show - he appeared on the show's first year at the same time as Commander Sinclair (Michael O'Hare) but stayed on for the series' run.