The 200th episode of Stargate will include a storyline that will be very familiar to us Firefly fans and that isn't just a coincidence.
Brad Wright, exec producer of Stargate SG-1 said:
The story, in short strokes, is Martin Lloyd has come to the S.G.C. because even though "Wormhole X-Treme!" was cancelled after three episodes, it did so well on DVD they're making a feature. A little kiss to "Serenity" and Firefly, which was possibly one of the best cancelled series in history.
Also, this episode will see the return of Richard Dean Anderson's Jack O'Neill after the actor left the show last season to spend more time with his family. Should be good.