Robin Williams or Chris Rock would be fabulous.
NOT Kathy Griffen. Her sense of humor is 98% demeaning other people, which at a major awards show that's supposed to be applauding the accomplishments of theatre people, is just not appropriate.
Personally, I'd adore Robin Williams if he did it. He's just manic enough, he can sing if needed, and he's actually been in a running Bway show this season, not just an 8 night special engagement.
"Are you sorry for civilization? I am sorry for it too." ~Coast of Utopia: Shipwreck