When it focused on b-ball in the '80s, the Big East was a close-knit, powerhouse conference. They had three of the Final Four teams one year and two in another.
There has never been a phenomenon like the original BE. I used to plan my days around which BE teams were playing on EPSN that night. It was FANtastic. The legendary coaches, the rivalries, the old barns they played in. For my money, although the ACC played a role, the Big East and Big Monday on ESPN spurred the NCAA BB explosion of the 80's and early 90's.
Now, it's just sad and I find myself liking Jim Boeheim more each day for saying so.