The TVTropes Trope Finder is where you can come to ask questions like "Do we have this one?" and "What's the trope about...?" Trying to rediscover a long lost show or other medium but need a little help? Head to Media Finder and try your luck there. Want to propose a new trope? You should be over at You Know, That Thing Where.
MetaFour
MOD
(Old Master)
This may be a more behind the scenes or meta trope, but instances of the actors having used "something" and then recorded/filmed their parts. An example off the top of my head: Bob Hoskins and John Leguizamo, along with other cast members, used alcohol and marijuana to get through production of Super Mario Bros (could you blame them?) and did a few scenes while still intoxicated, including driving.