Former Saved By The Bell heart-throb Mark-Paul Gosselaar and his wife LISA ANN RUSSELL are expecting a baby.

The 31-year-old actor, who played ZACH MORRIS in the hit series, met Russell, 33, when she briefly joined the cast of spin-off series SAVED BY THE BELL: THE COLLEGE YEARS in 1993. The couple are already parents to two-year-old MICHAEL; the new baby is due in the Spring (06).

Gosselaar is currently starring in hit TV show COMMANDER IN CHIEF alongside Geena Davis.