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!
St George
The best AFL team would be either the team/s which has/have won the most premierships, or if one is meaning in current terms, then the best team is that which most recently won the premiership. Carlton and Essendon have won the most Premierships at 16 each, but Collingwood has played in the most grand finals - at 42 and lags just behind them at 15 premierships. Geelong, however, has won the most recent, 2011, premiership - and in fact, three of the last five premierships, and would have to qualify for current title as "the best team in the AFL".
The famed, Collingwood! It won 4 Premierships in a row right at the end of the decade - a feat which has never been equalled.
Oklahoma
barcrelona
The 1971-72 Lakers won 33 in a row.
Man UTd
FSU
pennstate
Giants
85 bears
Detroit Tigers