The surprise speaker at the anointing ceremony of Mitt Romney wound up surprising the GOP presidential candidate's camp and the millions who watched, including Ann Romney.
"I don't think anyone could go as the way Clint Eastwood wants it to go, so we were just thrilled," she told NBC's "Today" show on Friday. "Frankly, I was thrilled for his support."
Eastwood also ignited the Twittersphere with his one-way conversation with an invisible President Barack Obama.
Here's a sampling of tweets in response to Eastwood's unscripted performance Thursday night at the Republican National Convention:
"This seat's taken."
— President Barack Obama, accompanied by a photo of the back of Obama's chair with him sitting in it.
"20 years ago I wanted Clint Eastwood to make my day. Now I just want him to take his pills and b grateful he doesnt need medicare."
— Nancy Lee Grahn, "General Hospital" actress.
"I demand to see Invisible Obama's invisible birth certificate."
— Michael Schaffer, The New Republic.
"Clint Eastwood made my day."
— Charlie Daniels, country singer.
"And so on this day, August 30, 2012, @MittRomney became a better actor than Clint Eastwood."
— Lawrence O'Donnell, host of MSNBC's "The Last Word."