It's done as an interview type deal with all the actors, with clips from the show mixed in. On the clip, the sound is a tad off. When a better quality one comes up, I'll post the link to it. It's not really spoilery, no more than what we've seen so far. The clips are too fast in coming.
320x240 4:3 WMV 0:25 1MB
480x480 4:3 MPEG SVCD 0:25 7MB
The drooling may begin. *vbg*
ETA: This is a great interview with Christopher Judge about Season 9. There are NO SPOILERS in this interview.
ETA 2: Better quality commercial (2 versions) for SG-1 courtesy of Brent Barrett.