yes i noticed too that around here...the billboards for Desperate Housewives had Terri Hatcher as the center of it all..but if you watch the show, Lynette and Bree get more screen time than she does.
Terri Hatcher isnt the only "well known" actress on the show, Marcia Cross has been a television goddess since the 80's when she starred on the soap "one Life to live" , she then went on to become even MORE popular on "Melrose Place" (which was on the air at the same time as Lois & Clark AND it outlasted L&C), she appeared on "Seinfeld" and "King of Queens" several times as well. (I'm a big fan of Marcia's lol

) Nicolette Sheriden(Eadie) was on "Knots Landing" a really popular night time soap of the late 80's and 90's.
In regards to developments on the show....Im guessing that Lynette's young, voluptuous nanny (Marla Sokoff from "the Practice") is gone now...

since her husband (who was also on Melrose Place) couldnt keep his eyes off her rack.
I think Bree's husband was a jackass from the start. he's a middle aged balding man..who didnt appreciate his wife...and now she's showing him that she doesnt need him. I really proud of her resolve to kick him to the curb LOL...now he's starting to see what a good thing he lost. Bree's son needs his ass kicked one good time too.
Mrs Huber's sister seems like she's going to stick around for a while....i was so surprised when Mrs.Huber got killed....when he hit her with the blender ..i was just like WTF

...i rather liked that manipulative , nosey woman LOL!