TVLine Items: Rihanna Nixes X Factor Gig, Glee Covers 'Friday,' and Other TV News to Know

Rest assured, Rihanna will not be judging Fox’s X Factor.

The R&B songstress told Ryan Seacrest on Wednesday that she was in talks to join Simon Cowell‘s latest reality-TV venture, but ultimately the timing just wasn’t right. “It’s something that I would have loved to do,” she explained. “But … you have to be around months at a time, which is impossible for me.”

The Black Eyes Peas’ Fergie and Cowell’s old Idol cohort, Paula Abdul, are both names still being thrown about to join LA Reid at the dais.

Ready for more of today’s TV dish? Well…

Rebecca Black has just received the ultimate compliment: The Glee guys are covering the YouTube sensation’s “Friday.” Specifically, Kevin McHale, Chord Overstreet and Mark Salling will perform Black’s accidental-single in an upcoming episode, Vulture reports.

• Science Channel has renewed Ricky GervaisAn Idiot Abroad travel extravaganza for a second season. This time around, Gervais & Co. will send aloof Karl Pilkington on a journey to fulfill his “bucket list.”

• Nickelodeon’s hit series iCarly, starring 17-year-old Miranda Cosgrove, has been picked up for a fifth season. Production on Season 4 is set to begin in May, with Season 5 slated to air sometime in 2012.

Everybody Loves Raymond‘s Doris Roberts tells EW.com she’ll return to ABC’s The Middle as young Brick’s teacher on May 25. It’s been a busy couple of months for the veteran funnylady, who is due to also pop-up on Grey’s Anatomy and Hot in Cleveland this spring.

• OWN has renewed four of its existing series: Ask Oprah’s All Stars; Enough Already! With Peter Walsh; In the Bedroom with Dr. Laura Berman; Oprah Presents Master Class. Additionally, OWN picked up six new series: Confronting… (which follows victims and offenders in mediation together); I Owe You My Life (about real-life heroes); Louie Spence Dance Project (a look at the life of the choreographer); My Mom And Me (which examines the titular dynamic); Sweetie Pies (former singer Robbie Montgomery starts a new venture); and Unfaithful: Stories Of Betrayal, which shares tales of couples and infidelity.

• In honor of The Paul Reiser Show premiering this Thursday, legendary Los Angeles deli Nate ‘n Al’s is serving up “The Paul RYEser Sandwich.” Take a peek at the fun here before checking out the NBC series tonight at 8:30/7:30c.

Which TVLine Items have you talking today?