A genealogy-reality TV show-in-production we highlighted in the September 2008 Family Tree Magazine has a premiere date: April 20 at 8 p.m., according to the Hollywood Reporter. It'll air on Mondays.

Modeled after Britain’s successful “Who Do You Think You Are” series, the show will have professional genealogists tracing the roots of celebrities including Sarah Jessica Parker and Susan Sarandon.

See a description on NBC’s Web site.