Many thanks to Cole Z. from St. Croix Falls for the nudge, here.  She says:

I watched a teacher at the local school do an “Hour of Code” with her after-school students! Code.org is SOOOO awesome! Short, really fun coding GAMES for kids and LIBRARIANS and very excellent, totally irrelevant celebrity endorsements! The site even has instructions for teachers and great video tutorials. A SUPER easy program idea– have kids, adults, teens do an hour of code! 

I checked it out, and Cole is right!  There are so many resources available on the Hour of Code website, from short self-guided tutorials to ideas for a 20-session series of workshops.  There are videos, posters, how-to resources and more on this well-organized and easy-to-use site.  There is definitely a role for librarians, here!  For more coding resources, check this this list on TeachThought.