Besides Downey I can't think of a big name film actor who has addiction issues, most of that seemed to be between the 50's and the 80's.
Oh, gee....let's see...Tom Sizemore, Heath Ledger (recovered before his death), Charlie Sheen, Drew Barrymore, Carrie Fisher just off the top of my head...Johnny Depp, Michael J. Fox and Ed Harris have admitted to drinking problems....Lindsay Lohan, ring a bell?
And those are just the ones that are public
Got to admit....you're consistant(ly wrong).