Michael Rapaport, last seen on Fox’s short-lived Mob Doctor, has joined the cast of Greg Garcia‘s untitled CBS comedy pilot starring Will Arnett, TVLine has learned.

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Penned by Garcia and to be directed by James Burrows, the multi-cam project follows Jack, a recently divorced guy (Arnett) whose life gets more complicated when his parents (Beau Bridges and Margo Martindale) have marital problems of their own.

Rapaport will play the husband of Jack’s sister Debbie (It’s Always Sunny in Philadelphia‘s Mary Elizabeth Ellis).

The cast also includes JB Smoove (Curb Your Enthusiasm) as Jack’s best bud Deweyne.

The gig marks a reunion for Rapaport and Garcia, who worked together on My Name is Earl (where Rapaport recurred as Earl’s incarcerated pal, Frank).