We recently ran across a nice web page by the public affairs TV channel, C-SPAN that was created for the Arar v. Ashcroft oral arguments before the US Federal Second Circuit Court of Appeals. There are a couple of interesting technical presentation ideas presented on the web page.
First, they have created a time-synchronization presentation between the written and video transcript that makes it easy to navigate through the argument.
Second, now Supreme Court Justice, Sonia Sotomayor, is participating via a videoconference link. The presiding judge has some kind of signal from her when she needs to interrupt to ask a question.