That's something to see allright, but there may be legal issues preventing this theme. Some companies even have talent disclosure recorded so that no one can accuse the company of forcing talent to perform under the influence. Or I guess directors can just shoot an empty room and call it drug-porn because there'd be whole day of flakey addict no-shows.
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"What I do know is that if Karen Carpenter and Mama Cass Elliot had shared that sandwich they'd both be alive today." -Michael K