Can't you go to a local parlor, but a fresh piece of dough and make your own? Othewise, I concur that California Pizza Kitchen is edible -- you can jazz it up with fresh mozz, etc...

I've had "bad" Bailey's Irish Cream before -- it will curdle... however, I've never refrigerated it at home, or back in the day when I was a bartender. That doesn't mean it won't spoil, but...hmmm... to answer your question on whether or not anyone would drink it...you know, I would drink or at least try, the "Old Bailey's"... see if you can tell if it's spoiled -- usually, when things aren't opened, oxygen hasn't had the opportunity to get into it and change the chemistry of things...
My veterinarian and my doctor have both told me (and I learned in college too) that most medicines have at least six months past their expiration date...so, I'm thinking, Bailey's -- you could be safe. You'll know in under 10 seconds if you're not.
Good luck!