This is a 'scorecard' by conference for 2008, the 10-th for the 64-team playoff system where every conference gets an automatic bid. You can find the full results elsewhere.
My original motivation for this summary was the thought that the regionals are a major source of inter-conference and inter-region play that helps one evaluate the relative strength and (possibly) future seedings of teams from various regions and conferences.
Current status: Super Regionals complete (9 June).
Here is the 'histogram' of the success rate for the 2008 NCAA regionals.
I tally a Regional champion under "win" and the Super-Regional champion (the team that goes to the CWS) under "champ" so the "champ" column is unchanged from the older 48-team system.
------ wins ------
Conference Number 0 1 2+ win champ comments
========== ====== === === === === ===== -----------------
SEC 9 2 2 3 2 three-fourths in? !?
ACC 6 1 1 1 3 strong year
Big-12 6 2 3 1 fair showing
Pac-10 5 1 1 2 1 mixed
Conf USA 5 4 1 outstanding!
Big West 4 2 2 upset 1 seed Stanford
West Coast AC 2 2 solid performance
Colonial 2 1 1 .
Big East 2 1 1 .
SunBelt 2 1 1 .
WAC 1 1 upset 1 seeds LBSU, ASU
Big South 1 1 .
Mo-Valley 1 1 .
Summit 1 1 was Mid Continent
Patriot 1 1 upset N1 seed Fla St.
Atlantic Sun 1 1 upset N1 seed Georgia
Big Ten 1 1 .
Southern 1 1 .
Horizon 1 1 .
Mountain West 1 1 .
independent 1 1 Dallas Baptist
MAC 1 1 .
Southland 1 1 .
Ohio Valley 1 1 .
Metro Atlantic 1 1 .
America East 1 1 .
Ivy 1 1 .
Atlantic-10 1 1 .
SWAC 1 1 .
MEAC 1 1 .
Northeast 1 1 .
Mid-Continent 0 now Summit