I don't know where this Finals will rank all-time, but I haven't had so much fun watching a Finals in a very long time.
Pistons/Lakers in '88 was probably the last one that was as good as this year's. Knicks/Rockets in '94 was good, too.
1988 was the first one that came to mind for me, too: tons of star power, clashes of styles and eras, uncertain outcome going into Game 7, and an extraordinary level of play.
I liked the 1993 Finals a lot, too. MJ and Barkley at the peak of their powers, road team won 5 games, several close ones including that phenomenal OT slobberknocker.
The Magic/Bird trilogy runs together on me. The 1985 Finals were crazy with BOS looking unstoppable out of the chute with the Memorial Day Massacre but LAL recovering to win the series. 1987 was probably a higher level of play, though: folks complain about "super teams" in today's game, but LAL brought Cooper and Thompson off the bench that postseason.