I should hope so. It'd be a pretty weak DVD if it only included the 1/2 hour finale. Minus commercials, that's about 22 minutes or so. In all honesty, I was somewhat disappointed with the finale episode. Albeit funny, I found there was no sense of closure what-so-ever. If someone watched that episode in syndication without knowing that it was the show's FINAL episode, that person would've chalked it up as just a regular ep. I guess I just expected more. In order for this DVD to even be remotely worthwhile, they'd be stupid not to include the hour-long show which aired prior to the finale.
As for me, I'm going to pass on this, just as I passed on the "Friends" finale DVD. I plan on holding out for the inevitable 9th season release.