John Travolta and Kirstie Alley talk about their 'Kirstie' reunion

Kirstie Alley and John Travolta are back together, and the "Look Who's Talking" flashbacks cannot be stopped. The pair are reuniting on screen when Travolta guest stars on TV Land's "Kirstie," playing a stagehand who gets involved with Alley's character.

The two sat down with "Good Morning America" to talk about the reunion, 21 years in the making, and they seem as close as ever. "He called me and begged me to be on the show," Alley jokes. "I said, 'John, hold up.' He goes, 'Please. Please!'"

Even though they made their last movie in the "Look Who's Talking" trilogy in 1993, the chemistry between them is as good as it ever was. While some of it comes for the love the two have for each other, Travolta elaborates, "It was more spirit of play, too. Kirstie was a person I could play with ... We just can't help but go to playing."

Travolta's episode of "Kirstie" airs Wednesday (Jan. 8) at 10:30 p.m. ET on TV Land.
Photo/Video credit: TV Land, ABC