Tonight, WWE heads to San Diego, California to tape this evening's ECW on Sci-Fi and Friday night's SmackDown. Here's a preview of what to expect:

-- WWE.com reports that tonight's tapings will have a Halloween theme.

-- On Raw, John Morrison & The Miz announced their intention to face D-Generation X on next week's Raw. The duo hosts a special live edition of "The Dirt Sheet" on ECW to discuss the details.

Thanks to reader Scott Landry for sending this in:

The San Diego Sports Arena website (link) says that there will be a double main event for tonight's ECW/Smackdown tapings.

-- The Undertaker vs. The Big Show in a Casket Match

-- Rey Mysterio vs. Kane in a Steel Cage Match

The website also lists: "Also in action: WWE Champion HHH, Jeff Hardy, ECW Champion Matt Hardy, Vladimir Kozlov, United States Champion Shelton Benjamin, WWE Tag Team Champions Carlito and Primo Colon, R - Truth, WWE Divas Champion Michelle McCool, Finlay, MVP and other Smackdown and ECW Superstars Live!"

* 5 PICTUERS of the NEW TNA iMPACT! Set (Huge Screens, New Stage) & BIG STAR Returns @ Tapings!