Below is a screen shot from a sample web page that I and a couple of colleagues produced last week. The idea was to complement recorded lectures with an easy-to-use way for students to discuss and comment on the content.
Using Twitter hashtags to live tweet events is not particularly new but I was looking for a way to allow students to do this with recordings. The idea is that each lecture in the playlist has a unique, automatically generated, hastag (which will probably be based on the module and date of the lecture) – clicking on the playlist link starts the video and displays a panel showing the tweets containing the hastag. Anyone wanting to comment on or discuss the lecture can then just tweet and include the hastag. Unfortunately, the Twitter API makes it difficult to do dynamic hashtag searches so a clever and helpful colleague came to the rescue with some code here. The task now is to put it into practice with some willing academics/students.