The cast of the venerated "Mary Tyler Moore" show will gather for an hourlong special on CBS Feb. 18 to mark the show's 20th anniversary.

Moore will be the hostess and the show will feature clips from the past and appearances by co-stars Ed Asner, Betty White, Valerie Harper, Georgia Engle, Cloris Leachman and Gavin MacLeod. "This has got to be the all-time best reunion ever," Moore says. "We loved the show and each other so much that there won't be a dry eye in the house."During its seven-year run, "Mary Tyler Moore" created three spin-off shows and won a record 29 Emmys.