Mod2

Finished mod2 - tests for videos controller (show, search), users controller, sessions controller, reviews model and controller, queue_item model and controller (index, create, destroy)
Nifty use of collections, but letting the data store handle this would play to its strengths. AR will let you directly tell the DB to average, sum, etc a specific column in a query, then all you have to do is format it. Otherwise you are potentially loading a lot of objects into memory you don't need.