Sam encounters ex-flame Diane Chambers (Shelley Long); Rebecca's romance blossoms.

Sam and Diane reconcile; Rebecca accepts Don.

Sam and Diane reconsider.

Sam encounters ex-flame Diane Chambers (Shelley Long); Rebecca's romance blossoms; Woody, Cliff and Norm face life changes.

Sam seeks professional help for sex addiction; guest Tom Berenger.

Sam realizes Rebecca misconstrued Gaines' invitation.

Rebecca thinks Mr. Gaines is interested in her.

Carla tells Sam she slept with one of the regulars.

Woody runs for city council; guests Spanky McFarland, Katie Couric.

Sam seeks a place to sleep after locking his keys in Cheers.