Stargate: SG-1 - Season 2 "Holiday" Promo
Stargate SG-1 Promo: Season : 2
Episode: 18
"Holiday"
Jackson's body is swapped with that of an old Goa'uld enemy named Ma'chello. As Jackson lies dying in the alien's aging body, O'Neill and Teal'c accidentally switch forms too - and unless the alien is captured, all three will be trapped in their new bodies forever.
Now available on DVD