Hodges: There are no words to describe how glad I am you're back.
Grissom: I'm sure you'll find some.
Hodges: The lab almost went to hell in a handbag while you were sabbaticalling. I'm sure you talked to Catherine, but just in case you didn't... Lot of hurt feelings. So, in case you talk to Nick...
Grissom: I'd rather hear it from Catherine, thanks.
Hodges: Fair enough, but, uh, permit me to say that the "Seasonal Behaviors of the Walden Pond Swamp Mosquito" is an incredibly stimulating seminar.
Grissom: ...And you know this how?
Hodges: I took your course online. It's free to alumni.
Grissom (pauses and smiles): Ohhhh, you're Spanky.
Hodges: 743. I aced the final, didn't I? (Grissom's smile fades, he nods, and he walks away without answering)