1. 4 Horsemen - Tully & Arn the #1 heel team in NWA/WCW
2. TIED Rock & Roll Express and Midnight Express - The influential small tag teams that spawned many copycats.....gotta love the double team moves
3. Road Warriors - The big man team that everybody copied. "Well...Tell Them Paul"
4. Dudley Boys - Did a damn good job copying the Nasty Boys and Public Enemy all the while pissing off the audience. Probably will be remembered as the team that did table spots.
5. Hart Foundation - I think I would go with the stable of Bret Hart, Jim Neidhart, Owen Hart, the British Bulldog Dave Smith.
To be honest I can't think of anymore teams since tag team wrestling has been dead for years. I would list more but wrestlers don't stay together as a team for years anymore.