A tip I have about this place — 2 years ago
A few other things to check out while you are stuck in Delaware: The Grand Opera House in Wilmington—Shows are frequent there: http://www.grandopera.org/events/ . The Grand Opera House website has a page recommending other things to do or see in the Wilmington area: http://www.grandopera.org/visitor/wilmington.php .
Also in Wilmington is Three Little Bakers dinner theatre: http://www.3lbonline.com/
If you are in central Delaware, there is the Schwartz Center for the Arts in Dover (http://www.schwartzcenter.com/scnavframe.htm ), where you can see both live performances and films.
Less frequently, you can catch a show at the Smyrna Operahouse too. http://www.smyrnaoperahouse.org/
You can also find some entertainment at Dover Downs: http://www.doverdowns.com/entertainment/index.asp
In Rehoboth, you can hear some live music at the bandstand all summer long: http://www.rehobothbandstand.com/schedule/
Delaware Friends of Folk has this handy calendar to help you find music, if your tastes run that way: http://www.delfolk.org/calendar.html and they also have monthly coffeehouses: http://www.delfolk.org/coffeehouses.html
Just a little something to distract you from how boring Delaware is. ;)
