Okay, this play becomes somewhat interesting after you start getting into the post-colonial debates surrounding poor little Caliban. Before we began arguing about whether Caliban was better for Prospero's presence or not, though, let's be honest: This play was boring and lame. Sure, it's kind of cute to read it as Shakespeare's farewell to the stage, but like many farewells it was boring and ultimately unnecessary.
Once we start focusing on Caliban, though, we get the pleasure of watching old white men get upset and we can actually start to wonder if Shakespeare was an early opponent of empire. This makes for interesting reading. Personally, I think Caliban is consciously presented as a critique of some of the imperialist attitudes present at the time, even if the play does come around to re-enforce the natural order of civilized over savage.
Anyway, if you don't know anything about post-colonial theory, I highly recommend against reading / watching this play.