The events are often what you'd expect, but there are a few interesting surprises every now and then. The Milpitas Library, for instance, is having a Miyazaki film festival all this month, with showings of his movies every Thursday, and an all-day festival of his films this upcoming Saturday.
There are also occasional displays of high-tech geekdom, such as Google employees dropping by the local library to teach advanced searching techniques, or O'Reilly /Safari Publishing sharing their catalog online as e-books, freely available to anyone with a Santa Clara County library card.
Other recent events have included poetry slams, a Hawaiian festival (complete with hula dancing and a slack key guitarist), peformances by a Celtic folk guitarist, free tax assistance, the CourtMobile (free legal assistance), and a wide variety of other programs.
...and for those old school punks who want to feel *REALLY* old school, it may amuse you to hear that the Campbell library just held a "Punk crafts program", teaching kids how to make patches and wrist cuffs, complete with free supplies and refreshments. Oi!