Any particular kind? Fiction/Nonfiction, poetry, playwriting/screenwriting?
And yes, University of Iowa has a fantastic program, but it's very competitive because it is one of the best in the country. It all depends on what you want to do with it.
Check this out:
The Best of the Best - Magazine - The Atlantic
I'm starting my MFA in dramaturgy in the fall and I'll be working closely with MFA playwrights, so I'm somewhat familiar with that side of things if that's what you're interested in.