libraries are great places to:

get lost/stumble upon books you've never heard of

check out dvd's for free

read new children's books to your kids

write (away from all the snacks in your kitchen)

get a high school diploma (yes, look into it)

learn a language.

what else?

Very much enjoying the widespread, nonpartisan love for the library. All of these replies have warmed my heart. Long live the library!