A bearded David Letterman made a rare public appearance at San Antonio's Majestic Theater Friday alongside Steve Martin and Martin Short to deliver one last Top 10 list dedicated to Republican presidential candidate Donald Trump.

“I have no regrets. None. I was happy,” Letterman told the crowd. “And then a couple days ago Donald Trump said he was running for president. I have made the biggest mistake of my life, ladies and gentlemen.” Watch the video here.