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Celebs and insiders react to Ashton Kutcher joining 'Two and a Half Men'

Even before CBS confirmed that Ashton Kutcher would officially be filling the gaping hole left by Charlie Sheen joining the cast of “Two and a Half Men,” Twitter was rife with opinions about the addition of Kutcher.

Neil Patrick Harris had a very positive response, tweeting, "Ashton's replacing Charlie? Good Times! CBS shindigs just got much easier on the eyes..."

“Arrested Development” producer John Levenstein foretold the future, writing Sheen, “may have overplayed his hand.”

Jeopardy champ Ken Jennings took the cerebral route, mocking Kutcher’s math skills and his tweet about the square root of 6.5 (it’s 2.5, in case you didn’t catch it).

Within minutes of the announcement, David Letterman’s head writers and co-executive producers Justin and Eric Stangel were at it. Eric suggested renaming Sheen's tour the “Torpedo of Unemployment.” 

And Justin pointed out that for Charlie, who’s now out of work, Regis Philbin will be creating an opening on a television show quite soon.

“Cougar Town” producer Kevin Biegel joked that Sheen's got something else lined up already. “Ahem ... did you hear, Charlie Sheen signed on for his next project. It’s called, “Dude, Where’s My Job?”

So far Sheen has remained mum, not returning text messages or tweeting about his replacement, but his "Torpedo of Truth" guitarist Robert Patterson wrote simply, “Time for GYM.”

What do you think about the replacement? Leave a comment below.

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