By Breaking Celebrity News Staff

All the buzz on Friday is centered around Clint Eastwood, as the 82-year-old Hollywood legend delivered a quirky endorsement for presidential candidate Mitt Romney at the Republican National Convention in Tampa, Florida.

Celebrities were swift to react on Twitter, as Clint's speech -- an 11-minute conversation chastising an imaginary President Barack Obama -- dredged up many witty responses.

* The Voice coach and Maroon 5 frontman Adam Levine: "Clint Eastwood has gone f**kin nutterbutters yo."

* Comic legend Bob Newhart: "I heard that Clint Eastwood was channeling me at the RNC. My lawyers and I are drafting our lawsuit…"

* Movie critic Roger Ebert: "Clint, my hero, is coming across as sad and pathetic. He didn't need to do this to himself. It's unworthy of him."

* Star Trek star Zachary Quinto: "Is this a segment for 'Mrs. Eastwood and Company'?"

* The Newsroom star Olivia Munn: "Clint Eastwood was talking to an empty chair at the RNC...No, that's not the set up to a joke. Its not even a joke."

* Actor and LGBT advocate George Takei: "Clint Eastwood's RNC speech was to imaginary Obama in an empty chair. I'm drafting a DNC speech to imaginary Romney in an empty factory."

* Comedian and actor Patton Oswalt: "To restore balance to the universe, Obama must have Tommy Chong onstage at the DNC talking to a steak."

* MSNBC political analyst Rachel Maddow: "Looking at Rubio & Romney but all I can see is the Clint Eastwood performance art that just happened on that stage. What were they thinking?"

* Soap opera star Nancy Lee Grahn: "20 yrs ago i wanted Clint Eastwood to make my day