The Design Nine blog alerted me to a bill in New Hampshire that would modify state law to allow communities to build publicly owned networks. It appears they may currently invest in a network in unserved areas -- though few places are entirely unserved. Most places have pitifully slow and overpriced DSL available to at least some residents. This bill would expand their authority to build networks.
Unfortunately, I have no sense of how likely this is to pass. The story in the Concord Monitor suggests it is seeing intense opposition from the usual sources - the private companies that want to decide alone who gets access to the Internet at what speed and at what price.