I would have said "Favourite Teal'c Line", but there's probably not enough of them for it to be considered spam. I'll kick it off with these three. First, from Rite Of Passage, when Teal'c freaks Jack out with the mysterious items in Nirrti's lab -
Jack: What's this for?
Teal'c: What do you think it is for?
And a bit from The Other Side -
Jack: So what's your impression of Alar?
Teal'c: That he is concealing something.
Jack: Like what?
Teal'c: I am unsure. He is concealing it.
And in Smoke And Mirrors, Teal'c clotheslining Dr. Langham, and then interrogating him by simply acting scary as hell. He's so cool.
For more fun with Teal'c and Jack,
dknightshadehas an interesting discussion of their developing relationship here, with reference to the current
redial_the_gateepisode, Message In A Bottle.
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Also, I've now added the answers to the unguessed lines on the song meme. And posted yet another Sam/Mac story to LeapGate. I am a busy bee.
Jack: What's this for?
Teal'c: What do you think it is for?
And a bit from The Other Side -
Jack: So what's your impression of Alar?
Teal'c: That he is concealing something.
Jack: Like what?
Teal'c: I am unsure. He is concealing it.
And in Smoke And Mirrors, Teal'c clotheslining Dr. Langham, and then interrogating him by simply acting scary as hell. He's so cool.
For more fun with Teal'c and Jack,
---
Also, I've now added the answers to the unguessed lines on the song meme. And posted yet another Sam/Mac story to LeapGate. I am a busy bee.

Comments
I love this exchange in Chimera, when Teal'c is counseling Daniel on his dreams:
Daniel: So basically, I'm destined to never going to get a good night's sleep ever again.
Teal'c: Knowing your past experiences, Daniel Jackson, I do not know how you have slept well before now.
And Affinity, when he and Sam and Daniel are discussing the perils of relationships:
Sam: Teal'c, how do Jaffa couples handle their problems?
Teal'c: On Chulak, a dispute between a man and a woman that cannot be resolved necessitates a pledge break. It must be requested by one and granted by the other.
Daniel: And if that doesn't work?
Teal'c: A weapon is required.
A lot of my favorites have already been mentioned, but I will add that I utterly adore how much Teal'c can convey with a lift of the brow or a tilt of the head, his riffing on Jack in the invisibility scenario in 200, his trying to smile in First Commandment and then doing it right in Singularity, his defiance of Apophis when he saw the rest of SG-1 lying dead in The Nox... Oh, I do love our Teal'c. Kree!
Heeee, I'd forgotten about that one.