http://www.hollywoodsquares.com/backstage/2002/photos_valentine.html

John Ritter and his wife Amy Yasbeck will be the many couples on a special Valentines Theme Week.
Word is John and Amy's episodes will air Tuesday and Wednesday, but tune in all-week just in case.
Check local listings for time and channel.

If you are in the NY area like me, you get it on 2 channels:
4PM on WLNY and 7PM on WCBS