"This Old House" television star Bob Thomas, aka student Sam Stroth, at left, and friends prepare to sing a song after repairing Hansel and Gretel's gingerbread house during a dress rehearsal Thursday for Celina East Elementary's third-grade Christmas musical "This Old Gingerbread House." The performance, under the direction of music teacher Tiffany Stuckey, also was given to the school and public Wednesday and Thursday.