Bunnie's work on HDMI mitm is really cool.
https://fahrplan.events.ccc.de/congress/2011/Fahrplan/events... (Slides and long write up)
His 28C3 talk https://www.youtube.com/watch?v=37SBMyGoCAU
https://fahrplan.events.ccc.de/congress/2011/Fahrplan/events... (Slides and long write up)
His 28C3 talk https://www.youtube.com/watch?v=37SBMyGoCAU