By Adam S. Levy - Breaking Celebrity News Staff Writer

Actor Patrick Dempsey dished on his status with Grey's Anatomy, and shared a funny story about his mercurial Transformers: Dark of the Moon director Michael Bay on Wednesday's The Late Show.

Dempsey said his words in a recent interview with Italian Vanity Fair were misconstrued, as he said he's "pretty much done" with the show in terms of his current contract -- not necessarily that he's leaving.

Dempsey said he doesn't know if ABC is going to renegotiate his contract for the medical hit.

"That's what I'm waiting on," Dempsey said.

"Should I be worried about this?" Letterman asked.

"I wouldn't be that worried," Dempsey said. "Honestly, you should get some sleep."

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And of course, we got an obligatory Michael Bay story, as the big budget director's cathedral-sized temper -- and public clashes with stars such as Bruce Willis and Megan Fox -- have been well-documented.