Any street uses for thioridazine, haloperidol?

NO. However, given the answer above, people will use anything they can get their hands on to abuse, or help with a crash of other drugs. Both, have a high risk of a muscule movement disorder called tardive dyskensia, which can be permanent, and a syndrome called nms, neuroleptic malignant syndrome, which can be fatal...
Yes, not advised tho. People use just about every kind of medicine there is, on the street. We have seen people present in the er with dystonic reactions (arching back, writhing movements of hands, tongue, jaw, etc) after having taken "street xanax (alprazolam)." it turned out this "xanax (alprazolam)" was actually haldol. Not the kind of surprise people would want, i'm sure.