It would seem that most people prefer the super over-the-top Phillip Seymour Hoffman "Shut up!" scene that predicates this one. That one's good, too. In fact, I'll say that whenever Hoffman shows his face in this movie, great things happen. My favorite scene,though, is the scene where Barry confronts the Matress King.
I love everything about this scene, from the phone receiver that Sandler brings with him to the "ow. ow." that Hoffman says as she does his hair.
Sandler gets the best bit, though.
"I didn't do anything. I'm a nice man. I mind my own business. So you tell me 'that's that' before I beat the hell from you. I have so much strength in me you have no idea. I have a love in my life. It makes me stronger than anything you can imagine. I would say 'that's that', Mattress Man."
Oh, and the "th..that's that!" bit at the end is great, too. It's entirely possible that I'm rating this scene too low. Here it is (annoyingly clean edited - only one I could find on YouTube)