One of the most heartening things developers at our shop have done is start a sort of technical book club. About a year ago one developer got really into patterns and suggested running some sessions around a particular pattern. It branched out later to two developers and now every two or three weeks one of them runs a session on a pattern for an hour or two.
The format has morphed a few times, but overall it’s a really good sign that as a development organization we’re still looking to improve. And the best part is I had no part in the idea. All I did was agree to order about a dozen copies of Head First Design Patterns. Soon they’re going to swap out and do chapters of Effective Java, so I’ll be ordering some new books.