I haven't watched DWTS before this season. I was Hines Ward who brought me onboard! Wouldn't be watching if it wasn't for him.
Would love to see other Steelers in there . . . specifically Jerome Bettis or Franco Harris.
As for celebrities . . . I would love love love to see Hugh Jackman on the show, but doubt it will ever happen. Other hopefuls:
David James Elliott (Harmon Rabb on JAG)
Joel Gretsch (4400 and V)