Gil Grissom: I'll be back in four weeks, Stop Hugging Me!
Nick Stokes: "Sabbatical" is usually a euphemism for "sayonara." I don't think Grissom's coming back.
Catherine Willows: Why wouldn't he?
Nick Stokes: I don't know. He shaved his beard, he's lost a little weight, he's been leaving when shift is over. I think he even took a day off last week.
Catherine Willows: Maybe he's got himself a girlfriend.
Warrick Brown: Hey, Griss. So Hodges told me that you're flying the coop. What's the matter, you sick of babysittin'?
Gil Grissom: Just the opposite, I'm a teacher with no students.
Warrick Brown: I've still got a lot to learn. And besides, having you around kinda keeps me honest.
Gil Grissom: Whether you know it or not, you're the rock of my team. Catherine's gonna be in charge for a while, while I'm gone. Just be there for her like you've been there for me and it'll all be fine.
Warrick Brown: Thanks man, that means a lot. You know I got you covered.