Which celebrities (politics, theater, movies, music, TV, authors) have admitted to problems with alcohol?

Just celebrities that have, themselves, brought it up in public, the ones I can think of are: George Bush, David Letterman (talk show host), Van (movie star, comic TV star), Eddie Van Halen (Musician), James ey (Poet and Novelist), Kate moss (supermodel), John Daly (Professional Golfer), David Helfhoff (TV actor, singer, game show host)... Just celebrities that have admitted it. Please, no gossip.