iPad, iPod Touch, iPhone and Safari all support HTML 5 streaming. Alas, I don't see that Mac OS X Server 10.6 provides anything other than RTSP streaming. Anyone know of an open source HTML 5 streaming server project?

Great question. Sure someone is working on an open source HTML5 streaming server. On the commercial side I was told about Wowza last week. http://www.wowzamedia.com/h264.html