If you are around the same age as me (20 years old) you may not know how good the Celtics once were. From 1956-1974, an 18 year span, the Celtics won 12 of their NBA record 17 championships. That is unheard of in sports nowadays. The only record that can compare is UCLA mens basketball when they won 10 championships in 12 years. That was during the same era as that historic Celtics team. They have been breeding champions and they may have to make room for a couple more banners in the near future.