03/28/2008 02:45 am ET Updated May 25, 2011

Letterman Shuts Out Press During Visit To Alma Mater

The only certainty about David Letterman's appearance today at Ball State University is that he's coming back to town.

Beyond that, all else is speculation, school officials and faculty say.

The guesswork extends to whether Letterman will say more than a few words -- if any -- at today's 4 p.m. dedication ceremony for the new building that bears his name. The university expects thousands of people to attend the free event, scheduled to take place outside the building on McKinley Avenue, west of Shafer Tower.

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