Dealing with a Maniac (100NL6m)

If you're going to call hand 3 all in you should call hand 1. If you're not against KK or AA you're at worst coinflipping. (But you're right, when the crazy lag calls and then reraises it's probably a big hand... i've done the same thing playing the same way short stacked late in SNGs and having no other choice.)

In hand 3 you're likely coin flipping and maybe lucky enough to have him dominated.

Hand 2. Nice Lay Down.