I've always wondered why people think the '89 49ers were better than the '84 team. I realize Rice wasn't there yet, but the 84 team went 15-1 and smoked some teams during the regular season and weren't really threatened in the post-season. The 70s Steelers and Reds, 90s Cowboys.
'89 was Rice and Montana at their peak as well as Lott at safety instead of corner, Brent Jones, Charles Haley and the rest of Walsh's 10-year build. The one thing arguing for '84 is that Walsh was on the sideline, but that was such a machine I don't think it mattered.
I'll beat Michael Gee to it and throw in the '86 Celtics. Bird at his peak, then Walton addition. For the Lakers '80s teams, I'd go with 1987. Kareem was certainly better in 1985 -- his Finals that year are among the more underrated performances -- but I'd take '87 because of how much Magic had improved as an all-around offensive threat, plus Worthy was at his peak and Thompson came in. 1992 Cowboys had that unreal offense -- not just the Big 3 at their peak but also Harper and Novaceck -- and then the No. 1 defense, even if it didn't have the reputation for dominance as some more famous units.
2001-02 Red Wings 2003-04 Arsenal 1998 Yankees 1985 Bears 1995-96 Bulls I loved two of those teams, hated two others and begrungingly respected the fifth
Some good mentions so far, a few teams that haven't been mentioned - 1. 1986 Mets 2. 1989 A's (a better squad than those '70s teams, steroids or not) 3. 1991 Redskins (possibly the most underrated NFL team of all-time)
What about the 1998 Broncos? Went 14-2 and routed the Falcons in the Super Bowl. I will maintain to my dying day that team would have beaten the 15-1 Vikings in the Super Bowl if Minnesota had made it.
'86 Mets got lucky, and I think a lot of the judging is based on the cumulative careers of those on the team. And as much as I like the Sixers, they are one of only two teams in Stern's tenure to only win a single title. The other being the Mavs - they almost seem like flukes.
I'll throw a couple more out there: 1962 Packers: Only lost that Turkey Day game to the Lions. 1966 Packers: Lost twice out of 14 by a combined four points. 1975 Reds: Won 108 games, even if they had to go to 7 with the Red Sox.
Money. But then I am sure few are surprised I'm agreeing with this. They won four cups in five years and five in seven years, although the fifth one was sans some guy named Gretzky. I would be remiss, however, not to bring up the Montreal Canadiens who won five Cups in a row in the 70s with a lineup full of hall of famers, followed by the 80-84 Islanders who won four straight although they are widely considered the forgotten dynasty sandwiched between the Habs and Oilers runs. They were still a hell of a team with guys like Bossy, Potvin, Trottier and Billy Smith among others. Also, are we keeping this to pro leagues? Cause the original Dream Team is wondering why they have not been mentioned yet.