I'm seeing tons of messages from the AMERICA IDOL BOARDS that Taylor Hicks was quite sick last week up to last night. That was the reason why he did not look like his old self when he was with Kenny Rogers.
His Grandma said so too.
There is a large GET WELL SOON, TAYLOR thread here :
http://myidol.idolonfox.com/Boards/topic.aspx?tid=166980
If true, this explains why he looked lethargic last night.
If he was sick, I hope he gets better soon. The show needs the life Taylor had been bringing to it.