All Good Things is still the real TNG finale in my mind. Chances are good we'll see the HD remaster for a one night theatrical screening down the line.
With the rumors circulating about Enterprise getting revived ala Arrested Development, maybe a final TNG movie reunion could happen? (The Blu Ray releases are certainly rekindling a lot of warm fuzzy nostalgia.) A little scary to think the cast is almost as old now as their characters were in the future scenes of AGT!