Poor, addicted, self-destructive Tom Sizemore — a walking car wreck in a town filed with drug-meltdown cases — has been doing his level-best for years to erase his career and poison himself in the bargain. The simplest and cleanest procedure would be to kill himself, but it appears that Sizemore is into half measures. TMZ reported this morning he was sentenced to 16 months in the slammer (Donovan Correctional Facilty, near San Diego) for violating his probation in a 2004 methamphetamine conviction.