Broomstick Boy, I have to stop you when it comes to bad-mouthing Adam's technique. The boy can sing and it's obvious he's going for a certain style. Hitting the notes he hits makes the sounds they do--pure and simple. Sure, it is brighter than when a tenor is singing classically, but he is hitting them correctly. Lambert is perfectly placed, perfectly supported, and he knows what he's doing.
The tongue thing is irritating, I will give everyone that. However, it is a technique used to keep the larynx down (the thing in your throat you feel when you crack.) Julie Reiber does it, Idina Menzel does it (though she doesn't have the best technique), and Shoshana Bean uses a form of it where she simply lowers her tongue and pushes it to the front of her jaw. It's not just a thing he does with his tongue--it's how he was taught.
I know, right?