Lt. Col. Sheppard, Dr. McKay and others in “Unfinished Business”

Lt. Col. Sheppard

Maybe there's something wrong with him an MRI wouldn't pick up, if you know what I mean.

Dr. McKay

I'm not crazy, I just have another consciousness in my brain.

Lt. Col. Sheppard

So he just looks crazy?

Dr. McKay

I'm sure I do, but only because Dr. Fumbles McStupid here was in way over his head!

Dr. Zelenka

Yes! I made a mistake trying to save your life! Now, do you want to try and fix it, or do you want to continue to berate me some more?

Dr. McKay

I am perfectly capable of doing both at the same time.