The telephone number of the cab company is identified as 111-1111. Given the way telephone numbers in the US are allocated, this is not a legitimate phone number, since the exchanges (the first 3 digits) never start with the digit '1' or digit '0', for historical technical reasons.
Warrick: What are you thinkin'?
Grissom: That you married people take things too personally.
(about Grissom's refridgerator in his office)
Wendy: You got anything else in there? Bottle of tequila? Severed human head?
Grissom: I don't keep tequila.
Sara: And grass, not the kind you smoke on the floor in the closet. But all the shoes in the closet were clean.
Warrick: So someone was walking around in here with grass on their shoes? Maybe it was the missing husband ... or a desperate gardener.
Sara: Who was mowing more than the lawn.
Doc Robbins: Gil ... have you ever been even close to getting married?
Grissom: Once ... when I was younger. Her name was Nicole Daley. I asked her to marry me. We were classmates. She liked bugs too. I gave her my grandmother's ring, but my mother made me get it back. Second grade.