Update: 4/24/09 Tonight Show host Jay Leno was released from a California hospital Friday after staying the night for observations. Leno was admitted after he became ill Thursday morning. He will return to taping new shows Monday. ----- Original Post: 4/23/09 The Director's Cut has learned that Jay Leno has checked himself into a hospital - forcing the cancellation of tonight's planned taping of "The Tonight Show." NBC owned "Access Hollywood" says Leno worked all day - but has an apparent case of food poisioning. His spokesman, Dick Guttman, says Leno left his office at NBC's Burbank studios about midday, and checked himself into a hospital for observation. Guttman characterized his ailment as "mild." Tonight's show was to have featured guests: Ryan Reynolds, Jules Sylvester and swing band Big Bad Voodoo Daddy. A re-run will air in its place.