Actors, booze, and drugs.

[RCMerchant]

Bela Lugosi was addicted to morphine during the later years of his life. He drank a lot too.
Peter Lorre was also hooked on morphine.
Lon Chaney Jr. and John Carradine were infamous drinkers.

So who else?

[Alex]

Richard Burton.
Richard Harris.
Oliver Reed.

All famous for their heavy drinking.

[RCMerchant]

Oh yeah- those guys drank like fish!

Also...
.Bogart (who was drinking buddies with Peter Lorre)
.Brodrick Crawford (who was drinking buddies with Lon Chaney Jr.)
. John Barrymore (who was drinking buddies with no one!)

[Svengoolie 3]

Russell crow drinks a lot.

[The Burgomaster]

WC Fields was a notorious boozer.

Sam Peckinpah was into cocaine and it probably contributed to his death at age 59.

Stanley Fafara who played "Whitey" on Leave it to Beaver ended up having alcohol and drug problems.

[Allhallowsday]

Richard Burton.
Richard Harris.
Oliver Reed.

All famous for their heavy drinking.

Did you read Hellraisers?  

Don't forget WILLIAM HOLDEN, JACK HAWKINS, or JACK CASSIDY ... booze hounds.

RICHARD BURTON supposedly said that: "No man can drink me under the table... and only one woman."  (I think he meant LIZ TAYLOR).  

One time, a cop found RICHARD HARRIS laying in the gutter and asked what he was doing... RICHARD HARRIS replied he was waiting for his house to come by.  

Let's not forget BOBBY DRISCOLL who played in TREASURE ISLAND (1950) died at about 31 after a long slide into drug addiction...

More drinkers: PETER O'TOOLE, DAN DURYEA, BRUCE CABOT, JOHN WAYNE...  

[Alex]

Richard Burton.
Richard Harris.
Oliver Reed.

All famous for their heavy drinking.

Did you read Hellraisers?  

Oddly enough that is the very book I was thinking of when I put their names down. The whole getting alcohol crystals scrapped off Burton's spine part did not sound fun.

[claws]

1970s cultfilm actress Linda Haynes (Rolling Thunder, 1977) was addicted to drugs. After filming Brubaker with Robert Redford she left Hollywood in 1980 for good to overcome her addiction.
Vanity (The Last Dragon, 1985) was addicted to cocaine which caused her kidney failure in the mid 90s.

[Svengoolie 3]

Margot Kidder suffered from drug addiction.  So did Carrie fisher.

Bill Cosby had drug issues even tho he  wasn't taking them. (I thought of putting a wink after that but it's not funny.)

[RCMerchant]

Cameron Mitchell was a crazy drinker.
Louise Brooks drank like a fish.Alfalfa was a boozer.

[FatFreddysCat]

It would probably be easier to make a list of Hollywood stars that didn't have problems with booze and / or drugs...

[RCMerchant]

It would probably be easier to make a list of Hollywood stars that didn't have problems with booze and / or drugs...

Yeah, that true. But this is Bad Movies- so it's our job to exploit s**t.
.John Agar.Got into fist fights with Lon Chaney Jr. and John Wayne! But he still married Shirley Temple!
Gotta give him credit! And he was neighbors and drinking buddies with Ed Wood before Ed died.

[RCMerchant]

Ed Wood drank anything. Mostly vodka, from what I  hear.

[Allhallowsday]

It would probably be easier to make a list of Hollywood stars that didn't have problems with booze and / or drugs...

Yeah, that true. But this is Bad Movies- so it's our job to exploit s**t.
.John Agar.Got into fist fights with Lon Chaney Jr. and John Wayne! But he still married Shirley Temple!
Gotta give him credit! And he was neighbors and drinking buddies with Ed Wood before Ed died.

JOHN AGAR was an a-hole.  He slapped SHIRLEY TEMPLE around.  She was a real beauty as a young woman and like millions of men AGAR... what a turd.   

[Sitting Duck]

Richard Burton.

As Tom Servo once put it (in Gamera Vs. Guiron), "Parts dried up, but he didn't."