Jason Alexander Jason Alexander

Following the news that Kathy Bates will play the ghost of Charlie Harper on Two and a Half Men, Seinfeld star Jason Alexander has signed on to guest-star in an upcoming episode, TVGuide.com has confirmed.

Alexander, who portrayed George Constanza on the long-running NBC comedy, will appear in the penultimate episode of the season, airing Monday, May 7. Details on his role have not yet been released.

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The 52-year-old actor first announced the news on Thursday. "Looking forward to filming an episode of Two and a Half Men next week," Alexander tweeted.

Two and a Half Men airs Mondays at 9/8c on CBS.