Realtime with Tim Cook
If you want realtime coverage of the iPad HD, Engadget usually has the best liveblog of these things.
Other possible stars: AppleTV 3 and a new Mac Pro. And maybe a reduced-price, reduced-memory iPad 2. Although the more I think about it, the less sense an 8GB tablet makes. 8GB isn't enough storage for a good smartphone -- and tablets are more memory-hungry than phones.