I've been to 2 Final Fours and loved both of them.
I went to the 1998 Final Four at the Alamodome in San Antonio. Kentucky defeated Utah in the championship. Also in the Final 4 were North Carolina & Stanford.
I also attended the 2003 NCAA Final Four at the Superdome in New Orleans. Kansas, Marquette, Syracuse & Texas were the four teams in the Final Four. Carmelo Anthony led the Orangemen to the championship, beating Kansas in the championship game. There were some outstanding players in the Final Four that year, including: Anthony, Dwayne Wade, TJ Ford and Kirk Hinrich.
You're going to see great basketball played at the Final Four. The other great thing about the Final 4 is the passion of the teams and the crowds. In 1998 I sat in the Stanford section and Stanford alum Fred Savage (TV star from the Wonder Years) was jumping up & down just like the rest of the fans. The last cool thing is all of the sports celebrities you will run into at a Final 4 - coaches, former players and media are everywhere and its always cool to see them.