Good news! One of our all-time favorite TV actresses, one Lauren Graham, has signed on the line that is dotted and will be replacing Maura Tierney on Parenthood. We can only presume she was a considerably less expensive option for NBC than Helen Hunt was, but that doesn't temper our excitement about this news in the slightest. Let's just hope NBC doesn't decide to cancel the show before we get a chance to see it! [Ausiello Files/EW]