Stargate SG-1, Season 10

Vala:
[regarding Thor and the other Asgard] Out of curiosity, how can you tell the difference?

Dr. Jackson:
The voice.

[Michael Shanks, who plays Daniel, also provides the voice of Thor]

Thor:
There are many on the High Council who do not believe that we should be imparting you with such advancements.

Lt. Col. Carter:
Well, we'll try not to let you down.

Thor:
You are the fifth race. Your role is clear. If there is any hope for the future, it lies with you, and your people.

Lt. Col. Carter:
No pressure, huh?

Lt. Col. Mitchell:
I've said it before, I am for fighting to the death, but we need a plan, preferably one that avoids the 'to the death' part.