She'll make guest appearance on NBC laugher

Ellen DeGeneres is guest starring as the Buchmans’ full-time nanny in the season finale of “Mad About You” May 19.

DeGeneres, the star of ABC’s “Ellen,” will appear in the second of two back-to-back episodes, airing at 8:30 p.m. “Mad About You” star Helen Hunt also appears in the season finale of “Ellen.”

There’s a chance DeGeneres will appear in more episodes next season: “We love having her here, and we’d be happy to get her back next season,” said executive producer Vic Levin.

Also appearing in the season finale of “Mad” is “Titanic” director James Cameron, playing himself.

Follow @Variety on Twitter for breaking news, reviews and more