I caught it last night. As with the prequels, the hype surrounding the presentation was bigger than the event. Yoda's just too darned hard to understand and the whole gimmick seemed forced, no pun intended.
I'd have rather seen a clear distinction between Yoda the Character and Yoda the Actor. Put him in appropriate attire, black t-shirt, leather pants, do SOMETHING with his hair. Keep the voice but let him speak normally. Jennifer Garner didn't show up as Elektra, why should Yoda show up in costume?
Weak. George is in a rut.