An American icon is poised to make Tampa's day.

Rumors of a surprise Republican National Convention guest have been percolating, and signs are emerging that the mystery speaker will be none other than Clint Eastwood, the legendary actor turned director.

Multiple networks have reported that Eastwood is set to fill an anonymous speaking slot on the schedule, and NPR reports that the band is practicing the theme from the classic Western The Good, the Bad and the Ugly, in which Eastwood is a star.

Eastwood has endorsed Mitt Romney, but he faced criticism for some Republicans for his "Halftime in America" advertisement that aired during this year's Super Bowl. While the spot enjoyed widespread acclaim, conservatives like strategist Karl Rove faulted it for appearing to support President Obama's auto bailout.