I'll start the thread out by throwing in a few of the ones that have been mentioned in the other thread.
The ASUS Eee Pad Transformer is the first one that's really gotten me excited.
http://www.asus.com/product.aspx?P_ID=gHh4q7I8dvWJzhdV
No guarantees on release date or price, but it's already out overseas, and accidental postings on BestBuy.com and NewEgg.com have put it at $400 (without the optional keyboard dock).