Write a report – the obvious first choice
Turn the report into audio – you would think this would be the obvious second choice but not as many people use it.
Interview an expert – You record the audio and possibly the video and have transcripts made for a written copy.
Teleseminar – Same basic idea as a the interview with an expert except you can allow people to call in and ask questions during the interview
Webinar – Similar to a teleseminar except done on the web so there is a video component that can be recorded as well.
Video Tutorial – Generally done with a screen capture program for IM but any kind of video training will work.
Software – I’m not sure how well this works outside of the IM niche. Obviously it does but the cost of development and stuff may make it cost prohibitive unless you have a wicked customer base already.
I know there are more but that’s what I’ve come up with so far. Again, contributions welcome.