Question: who has the most back to back nba championships
Answer: Boston Celtics 17 21 1957 , 1959 , 1960 , 1961 , 1962 , 1963 , 1964 , 1965 , 1966 , 1968 , 1969 , 1974 , 1976 , 1981 , 1984 , 1986 , 2008 1958 , 1985 , 1987 , 2010