One of the interesting facets of this year's Idol was the intersection of Adam Lambert's sexual orientation and Kris Allen's faith. A lovely post on this is here. Money quote:
I don’t know what kind of Christianity he practises, or how he envisions his God. I do know this: he declares himself Christian to the television audience – i.e. to the world; and he freely, publicly, verbally, and especially non-verbally, loves Adam Lambert like a brother.
Which makes him a Christian in my book.
The Dish 