actually you can hallucinate from alcohol. this is mostly experienced by alcoholics though. heres a few links: Alcoholic hallucinosis - Wikipedia, the free encyclopedia Medscape: Medscape Access
Ahhh yes, Delirium Tremons. I can testify first hand that this is terrifying as hell. It's never good hallucinations when you are withdrawing from alcohol, it's always fucking monsters coming into your room and surrounding you while you are laying there in your bed sweating and shaking. Well, one time it wasn't monsters. I could have sworn people were breaking into my home to kill me once. Glad I stopped drinking.