This is a lesson that worked rather well with my advanced first grade boys.

I began the class by having everyone stand and hold their breaths. When they exhaled, they would have to sit down. I kept my stopwatch running to see who held the longest. I don't think anyone made it over 1'30".

That part was to contextualize the video on David Blaine, who holds the record at 17'04". The video can be found here: http://www.ted.com/talks/lang/eng/david_blaine_how_i_held_my_breath_for_17_min.html
It's 20 minutes long, but for a 50 minute class, I don't think that's unreasonable. I turned the Korean subtitles on, because some of the material is a little heavy.
We discussed the video, and then I instructed them through a "speed read" drill (which was an idea I got from another user on this site--- Hooray Waygook!).
They each received a strip of paper with the instructions "When you hear," and "You say." Then, one by one, they would read their strips of paper in order and complete a spoken summary of the David Blaine video.
I read through the completed text once, so that they would have a better idea of sentence order and pronunciation. Then we did it a few times, timing it with my phone's "stop watch" feature. They really liked the idea of beating other classes' best times.
I omitted the last seven sentences for smaller classes. Sometimes students would have to read two strips of paper instead of one.

I played the video with subtitles so they could grasp the speech better. I wasn't too worried about them learning medical jargon (ala "hypoxic brain damage").
But as I read through the completed speed read, I tried to explain anything that I thought would be difficult, and gave them opportunity to ask questions. They're advanced, so they seem to pick things up quickly.
At the very least, each student had only one or two sentences to concentrate on, so hopefully those sentences/words/grammar points/whatever would stick with them.
Mostly it's a good exercise in pronunciation, listening, and getting shy students to actually speak.

So Chad-uh Teacher,

how did you get on with the Keith Barry video?  I love this concept but I don't know which one will work better.  I think the Keith Barry video is more fun but he speaks so fast I don't know would the students understand him!

this lesson is brilliant! i might adapt it and spend a class beforehand doing some vocab because even my third graders are at quite a low level so the reading part might be a bit hard, but very excited to do this with them! Thanks so much!!