'Home Improvement’ stars Tim Allen, Richard Karn on reuniting for new series: A ‘live version’ of ‘Tool Time’
"Home Improvement" had a quality that all sitcoms strive for: chemistry between leads Tim Allen and Richard Karn. Allen, now 67, and Karn, now 65, starred together in the hit comedy series for eight seasons from 1991-1999.They played Tim Taylor and Al Borland, respectively -- hosts of the fictional television series "Tool Time." Now, the pair are reuniting for a new reality series, "Assembly Required," for the History Channel, which will see them oversee contestants fixing up and refurbishing everyday household items.