'Desperate Housewives' Preview: Susan Hurt in Stampede

"Desperate Housewives" is airing a big episode before taking a long holiday break. In "Down the Block There's a Riot", Paul's nefarious plan for Wisteria Lane is put into full effect, Juanita discovers Gaby's secret, Bree invites Keith to move in with her, and Tom is confronted about his past indiscretion with Renee. The new episode, where there will be cars smashed and gun loaded, airs