The seventh season of David's improvised HBO comedy, which returns on Sept. 20, will be centered around the TV version of David finally agreeing to do a reunion of the defining '90s sitcom. All four "Seinfeld" castmembers -- Jerry Seinfeld, Jason Alexander, Julia Louis-Dreyfus and Michael Richards -- will play themselves in multiple episodes, and the season finale will feature extensive snippets of the show-within-the-show.It should be said again: the premise for the new season of Curb Your Enthusiasm is truly inspired.
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