I took a look at the Windows Vista Innovation Café web site. What a nice interface, well adapted to the new bandwidth capabilities that surrounds us. But I am somewhat mystified they didn't have the guts to make this site using WPF/E. Sure, it's still in CTP state, but I feel they're giving way too much credit and exposure to Flash!
If WPF/E isn't ready for such applications, then they should at least constraint themselves in making so nice Flash front-ends! q;-)