No Team has. The AFL was born in 1990 and No Team has won 4 since then!! Brisbane has come close playing in 4 Grand finals but only winning 3 (In a row!)! Collingwood is the only Team to win 4 Premierships in a row but that was as a VFL Team! ("THE ONLY" Team worth barracking for, i.m.h.o!) Collingwood has "barrackers", the rest have fans or members! Check Our Club anthem and you'll see why!
Collingwood 4 premierships in a row 1927, 1928, 1929 and 1930
The famed, Collingwood! It won 4 Premierships in a row right at the end of the decade - a feat which has never been equalled.
Boston celtics won 8 in a row
Chicago bulls with Jordan
The 1971-72 Lakers won 33 in a row.
Los Angeles Lakers with 33 in a row
Miami Heat in the 2008 season
Essendon!!! (The bombers) Essendon and Carlton have each won 16 premierships - more than any other AFL club. So, in terms of club Premiership history, they hold the most premiership success. However, if one is asking the question more literally - 'Which is the best team (of players) ever to play football?':- One could argue that Collingwood, with its 4 premierships in a row, back in the late 1920's was the "best team". Then again, however, it could also be argued that the Melbourne team of the 1950's and 1960's was the best team for longevity of Top-level performance, in that it contested 7 Grand finals in a row, won 5 premierhips in 6 years and appeared in the finals for 11 or 12 years in a row for 6 premierships!! Finally, there is the other argument concerning specific level of team performance and playing ability of any team in and of itself: In this regard, it has been argued by television and radio 'football experts' over recent years that the Geelong team [which - with its minor annual changes - has topped AFL football over the past 4 years and approached record consecutive wins at one stage] is probably the greatest team ever to pull on their boots!