While no guest stars for Friday Night Lights' upcoming fourth season have been set yet, Connie Britton admitted she's already campaigning for a visit by her friend Ron Perlman, whom fans of FX's Sons of Anarchy know needs no introduction.

"It would be so fun if he came in and was some awful coach, a really hardass coach," Connie said in an interview with E!. "Of course, Ron is busy doing Sons of Anarchy."

Connie also said she would love to show up on Friday Night Lights executive producer Jason Katims' new NBC show Parenthood, but scheduling conflicts won't allow it.

Similarly, the outstanding actress who plays Tami Taylor said. "At some point they were talking to me about doing some stuff on Californication, which I would really love. It couldn't work out, scheduling-wise, but if it ever did, it would be fun."

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.