Actually, no. It's part of the format now.
The "Voices" segment on ABC and the "Power Player Of The Week" on Fox are both designed to have some sort of celebrity guest. I'm expecting Fox to add in a 15 minute recap of Idol to their Sunday morning show and drop the roundtable any day now. Particularly if Chris Wallace has anything to say about it he'll get rid of those right wing reactionaries like Brit and Juan.