A very comprehensive Wikipedia article about "Da Madness"...

COntents include:

1 Tournament format
2 Selection process
3 Champions, runners-up and locations
4 Records
4.1 All-time team records
4.2 Individual single-game records
4.3 Team single-game records
5 March Madness
5.1 Brackets and picks
5.2 History of the term
6 Television
7 Revenues
8 Final Four
8.1 Final Four records
8.2 Other Final Fours
9 Trivia
9.1 #1 seeds
9.2 Low seeds
9.3 First-round games
9.4 One-loss and unbeaten teams
9.5 Misc
9.6 Region names
9.7 Championship margins
10 See also
11 External links
12 Footnotes