The Undertaker made a surprise appearance at a WWE house show last night, in Waco, Texas.  Taker was unadvertised for the event, and teamed up with Sheamus to face Wade Barrett and Damien Sandow. 

I think it's safe to say at this point that The Undertaker will be at WrestleMania, and will most likely appear at Raw tomorrow night.

The above picture was also taken at the event by Rick "The Sign Guy" Achberger.  You can follow him on his Twitter page @RickWWESignGuy