I love his passion.
I was in the audience at this event and this was probably the most popular session of the weekend. There were some restless murmurs in the crowd when Tyson didn't speak for several minutes at the start. He just stared straight ahead, but he soon made up for it.
I likened it to a scene from one of those kung fu movies where the master drinks quietly while a fight breaks out around him, before he suddenly jumps in and starts kicking ass.
I've tried this and it works well. I have a bunch of plaintext files (that I typically convert to PDF using LaTeX). I pasted the text into some XHTML files, created an ePub by hand, and imported it to iTunes. It synced just fine to the iPad and looks very nice in iBooks.
I'm now working on putting together a little Perl script to automate this so I can generate an ePub every time I generate the PDF.