There has been a lot of buzz about Adobe Air and Microsoft Silverlight and many people are experimenting with it. Most of these experiments are... well... just "an experiment", but some are actually very cool.
Here is a huge list if you want to see what is going on with these two technologies:

I would really like to see people focus more on making usable concepts, instead of just making technical experiments.
Do what thirteen23 did with WPF. Make stunning concepts that actually work. Spend a little extra time, and make it work for "normal" people. It takes longer to do, but the effect is 10 times better.
Full access for... $5 per month
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What the shift in media is really all about.
14 chapters
220 pages
31,000+ words
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It is not about creating a shop in a tab. It is about turning communication into sale.
29 chapters
156 pages
23,000+ words
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$7.58 on Amazon