Jack Callahan Details Cast On MovieCast On TV Name Jack Callahan Also Known As Birthday Gender Male IMDB Jack Callahan profile on IMDB Place of Birth As: Dr. Jack Smathers1975-01-10Stowaway to the Moon... As: Man1980-05-05Off the Minnesota St... As: Father Kelly1981-11-17Skokie... As: Shawn O'Leary1993-04-21Walker, Texas Ranger...