What Should/ Can I See This Saturday?

I'm in town for the weekend, and though I can't see anything else Friday or Sunday (Hair and Next To Normal on Friday, In the Next room and Mamma Mia on Sunday), I have an opening for a Saturday matinee. My question is, since I unfortunately won't be back in the city until late January, what could/ should I see? I'm leaning towards Ragtime, though I've already seen it (and loved it to pieces). If you think Ragtime will close by January then by all means I'll see that (Better seeing it three times now than regretting it latter). If not, I had some other ideas:
Fela (Could this close by January?)
Finian's Rainbow (Same...)
Mary Poppins (Only for Laura Michelle Kelly)
Shrek (Just to see Ben, and before it's closed, if he's that good)
Everything else I've either seen or just not interested in. My question, what do you think I could and should see on Saturday if i'm buying the tickets day of (I honestly can't afford it any other way)?

You should see Ragtime.

Are any of the shows above (minus Shrek, since it already is) in the realm of possibly closing by February? If so, I'd rather see that show...

I'm going back to see Ragtime - this time I'm bringing my family from out of town. I haven't seen Fela, did see Finians, and for my money, Ragtime is the show I wouldn't want to miss, and for that matter, I want my folks to see.

I'm seeing Ragtime this Saturday!
I hope it's as great as everyone says it is!

---