Tim Sizemore is one of the best examples of why someone should never start drugs….because they must be damn addicting in order to throw away a successful movie career.

TMZ has learned that actor Tom Sizemore has been charged with five felonies and one misdemeanor stemming from a crystal meth bust earlier this month.

Sizemore was charged with one count each of transportation and possession of methamphetamines, and three counts of possession of prescription drugs without the proper prescription.