Somebody in a podcast (pretty sure it was not BOL) suggested after the last one that they should broadcast it live to the Apple stores. I think that is a really good idea, and ensuring enough bandwith for only those locations would not be difficult, whereas trying to provide a feed for everyone on the internet who wants to watch live WOULD be difficult.
In general we need a better system for transmitting and buffering live events. I would be very interested in watching the keynote in near-real time, but I wouldn't mind if it filled a buffer (think youtube, but it obviously cannot progress passed what is current). Then if I progress ahead of the buffer it pauses, I could pause it without loosing the data that's already buffered, and you can rewind and fast forward within the buffered portion. Then at the end, you should be able to transfer the buffer into a permanent file so that you can put a copy on a mobile device. This would make sense for sports, news events, etc. Any thoughts, or better yet is there a product that already does this and it just hasn't gotten ubiquitous adoption?