“Duet” belongs to a long tradition of Stargate episodes where alien tech goes wrong and actors get to stretch a little while they’ve been bodyswapped or deaged or, in this case, had other people’s consciousness dropped in their body like a time-share. Previous SG-1 examples include “Legacy” and “Fragile Balance”. This time, David Hewlett gets to stretch and pretend he’s a mischievous woman who enjoys working out before bed and sleeping nude, then waking up as himself, very embarrassed and very, very sore.
The story’s very funny and has some great moments, not least of which is McKay’s date with a botanist, during which he manages to have two Cyrano wingmen to assist him. We all enjoyed it, but I do think they missed a little opportunity. We could have enjoyed this episode even more if we knew who the other consciousness in McKay’s brain was. This is Jaime Ray Newman’s first appearance as Lt. Laura Caldwell. If we had gotten to know the character first, then David Hewlett’s impersonation would surely have been even funnier. Weirdly, Caldwell only appears in the show just one more time, although she’s featured in quite a few of the companion novels, and gets both a detailed backstory and an eventual promotion to captain.
Fire Breathing Dimetrodon Time 
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