Please for the love of sliced cheese, NO. Gameshow celebrity specials have long since lost their appeal for me, in large part because Feud did it, WWTBAM did it, Weakest Link did it, and then TPiR did it, and all except the last one did it right before they met their untimely ends (or in Feud's case, right before they changed hosts). TPiR has run the concept into the ground for me thanks to the glut of "specials" they've done that needlessly included guest stars.
Except that there have never been any celebrity contestants on TPIR, and Game$how Marathon and (pre-WOF) Vanna White's appearance don't count.
It'll be interesting to note that for the first time in 30 years, ABC will air a primetime special of J!, and I'm going to wager (no pun intended) that the Ken-Brad-James matchup will be even more memorable than the Super J! series before it, as they are the three greatest players ever.