Series Finale: That '70's Show
 

That '70s Show (May 18, Fox): On New Year's Eve 1979, the gang marks the end of a decade, an eight-season run and any excuse to revive That '80s Show. The press release says Ashton Kutcher will appear; the rumors say Topher Grace will, too. The hourlong finale will be preceded on May 11 by a precisely 83-minute clip job, "The Final Goodbye," featuring many scenes of Kutcher ranting--sorry, that would be Punk'd.

Credit: Yahoo! T.V.