A familiar face will be popping up at Seattle Grace before Grey's Anatomy goes on hiatus at the end of the season. Kate Walsh, a.k.a. Addison Montgomery, M.D., will return to the medical drama when her character makes a visit to the Emerald City. It'll be for just one episode, though. ABC has already picked up Kate's spin-off series, Private Practice, for the fall.

Executive producer/writer Shonda Rhimes confirmed that Kate Walsh will return to Grey's Anatomy for a guest bit this spring, but a definite date has not been pinned down. Five new episodes of GA are set to air starting April 24.

There have been rumors swirling ever since Conan O'Brien was tapped by NBC to replace Jay Leno as host of The Tonight Show that O'Brien would be asked to move to L.A. from his current New York City home. And now it's been made official by NBC: Conan will move to L.A. when he takes over the show in 2009.

The network has big plans for the area. NBC is selling off part of its Burbank lot and Conan's show will beam to us from the renovated Studio One at Universal Studios.

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OK, so no one has to be told that the final season of The Sopranos starts tonight at 9pm on HBO. After all, there have been tons of news stories about it, if you haven't heard (there might be a spoiler or two at some of those links). But don't forget that Entourage also returns tonight, immediately following The Sopranos at 10pm.

Remember when April and May used to mean the season was winding down on all of the networks? Now here it is Easter and the cable networks are just warming up. Everyone seems to be waiting for Tony and company to come back, but I'm more excited about Entourage. When we last left our heroes, Vince had ended his relationship with agent Ari, so it's going to be interesting to see where they go with the storyline.

Thanks for the Easter candy, HBO!

I'm a big fan of private eye TV shows and novels, and I've been thinking lately that they need to make a big comeback (sorry, Monk just isn't the same). Raines comes kinda close, but it's not quite the same thing. Judging from the script for the pilot of Marlowe, ABC's modern take on the classic Raymond Chandler character, it looks like it could be a return to the great private eye genre that TV fans have been waiting for.

The first thing I noticed is that, yes, the show is going to have voiceovers! Some people hate voiceovers, some people love them. I remember that Robert Parker hated the voiceover on Spenser: For Hire, when it was actually one of the cool things about the show. There's a lot of voiceover in this pilot script, and while I don't mind it, I wonder if it's too much.