‘Big Bang’ Kaley Cuoco tapped for ‘Grey’s Anatomy’ finale

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Kaley Cuoco of the CBS comedy ‘The Big Bang Theory’ will guest star on the season finale of ‘Grey’s Anatomy,’ according to EW.

The actress, a self-proclaimed fan of the show, announced the casting Thursday night at PaleyFest. Cuoco said she is set to film her part next week, although what exactly that part entails is still unclear.

‘It’s a big ol’ secret. I have no clue what I’m doing,’ she told the magazine. ‘My guess is that I will be a patient of some kind. I’m practicing my scared, sad ‘I’m dying’ face.’

This year’s season finale for the ABC drama should prove to one to watch. Other guest stars include ‘Gilmore Girls’’’ Liza Weil and ‘Everwood’s’ Debra Mooney.

The episode is slated to air Thursday, May 14.

--Kate Stanhope