TED talk discussion groups
I've started running a weekly TED talk discussion group in my hometown, an it's something I think other people might be interested in emulating. My formula has been showing 2 talks, usually related to each other in some way, with a total length of under 30 minutes. That way, it's not too much information to hold in your head, and we've had a lot of great conversations about how we can maybe take these 'Ideas Worth Spreading' and have them make a more concrete change in our lives.
I'd like to encourage others to consider hosting something like this in their own towns - I do mine at a coffee shop where I bring in a projector and a screen, but it's possible to do it from a large laptop if the group is smaller. So far, the list of talks I've done is here (feel free to steal them, since it's a non-trivial time commitment to find appropriate, matching talks that are under 30 minutes total):