Charlie Sheen, the master of the “apol.” (Chris Pizzello/AP)

Also, Charlie Sheen has issued “an apol” -- that’s a half-apology, by the way -- to co-star Jon Cryer for calling him “a turncoat, a traitor and a troll” for not reaching out to Sheen. (Cryer’s reps say the actor has contacted his “Two and Half Men” brother.) “I’ll apologize to Jon right now,” Sheen told an L.A. radio station during his “apol.” “I was in a mood and I threw that out to somebody. I didn’t know they – well I kinda knew they were gonna print it. Yeah, I knew they were gonna print it. I confuse myself ... It’s a little bit of a half-apology. An apol.” ( People)

Inane non-news item of the day: Joel Madden and Nicole Richie have marital Twitter-spat over the fact that Richie spent $3,000 on pillows. (Us Magazine)

A pair of celebrity break-ups and casting news involving Keira Knightley and “Lost’s” Terry O’Quinn, after the jump...

“Hangover” star Justin Bartha and Ashley Olsen have reportedly ended their relationship. (People)

Also broken up: Audrina Patridge and boyfriend Corey Bohan . Totally understandable if you need to call in sick so you can mourn this tragedy. (Popeater)

Casting news: Keira Knightley will join SyFy miniseries “Neverland” as the voice of Tinker Bell. (Deadline) ; Terry O’Quinn joins pilot for Marc Cherry’s “Hallelujah” and will play a villainous millionaire (TV Line) ; Jennifer Morrison of “House” cast as lead in the pilot “Once Upon a Time.” (Deadline)

It’s Chuck Norris’s birthday. So why not take a Norris quiz in his honor? (

Don’t forget to share your best Simon Cowell impressions in our “ What Would Simon Say? ” contest. You have until midnight Friday.

Also, don’t forget to join today’s Celebritology discussion at 2 p.m. EST , where I plan to issue “apols” to the readers, and readers are free to yell at me for spending too much money on pillows.