Somehow, Heather Headley cracking worked for me. She was cracking during emotionally-intense sections, and it made sense. Plus, she did manage a number of full, open-throated high belts during the show...which, I think in terms of tone and quality, outshone any high belt from Lillias (whom I also adore). I think she, like Tonya Pinkins, can do no vocal wrong.
As far as Jennifer Hudson goes, she does have some theatre background, so I'd like to think she can act. She sure did feel her songs when she performed them on Idol...to me, if you can do that...even if you don't know how to act, you can be taught how by a good director.
"Fundamentalism means never having to say 'I'm wrong.'"
-- unknown