Anyhow
After looking through the video again and again
yes the menu jumped, great - shame you missed mediascape jumping at about 3:50 - when he selected an album to play
as for selecting photo twice, he did press the screen relatively quickly, maybe mediascape was still loading - on the old (lol still current atm) mediascape you had to wait for a page to finish loading before swapping, maybe it was just that
the live wallpapers are not sony - they are stock to android 2.1 so just a general issue with all 2.1 phones there
as for angry birds, as it requires 2.1 to function correctly i believe this is improved gameplay
In summary, its far from polished, but its sure as hell looking better than the current 1.6 we have