Knoxville Hodges Library, University of Tennessee, May 1, 2007. http://www.youtube.com/watch?v=dX_EvqXJx44
(Thanks, Marianne Lenox!)

Streaking. Tutt Library, Colorado College, 1992. Photo from CC yearbook.

Streaking. Tutt Library, Colorado College, March 5, 1976. Streakers zoom past Sallie Payne Morgan, former Dean of Women at CC. The CC yearbook for 1976 describes this streak as an annual event.

Similarly, the cross country team at Grinnell College has an annual streak including the library (thanks, Catherine Rod!) and the Ultimate Frisbee Team streaks through the library every spring during finals at Oberlin College, too (thanks, Ed Vermue!).

Tutt Library, Colorado College, 1994-ongoing. Students dress up the statue of Charles Leaming Tutt, Jr. (“Chas”), for whom Tutt Library is named. The statue was installed in front of the library in 1992. The earliest CC Archives photograph of a statue decoration is from 1994. Many more images at www.flickr.com/photos/tuttlibrary/sets/72157627707737080/.

Sesame Street, 1970s? http://www.youtube.com/watch?v=ZJlkplvYdgA Other muppetational library shenanigans: At Your Library, and Rock and Roll Readers from Sesame Street, At the Library (Michael Sporn) and Kermit the Frog Visits from Reading Rainbow, Library and Words from The Electric Company (turns out Easy Reader’s “favorite girl” is a librarian!), and The Library from The Muppet Show. (All fictional shenanigans.)

Austin Public Library, 1996-1997. As an act of civil disobedience in protest of a library’s phasing-out of records, a patron borrowed 150 LPs and kept them out for many months. http://www.austinchronicle.com/issues/vol15/issue37/pols.library.html

Peep Research: a study of small fluffy creatures and library research.
Staley Library, Millikin University, 2003.
https://www.millikin.edu/staley/about/peeps/Pages/default.aspx

Library Musical from prangstgrüp.
Butler Library, Columbia University, 2004.
http://www.youtube.com/watch?v=ZaLf8FpO6p8
http://www.arrivistepress.com/February04/zbendinerfeaturewriter2nd0204.shtml

It can be difficult to use the color copier… http://www.youtube.com/watch?v=7XvAakX__cQ
(A fictional shenanigan, presumably.)

Fun in the library.
Libraries usually unknown. For hundreds of minor-league library shenanigans, search “library” at http://www.youtube.com/