Sorry, for wandering off, was suddenly distracted by
Harry Potter and the Methods of Rationality.
The thing I was trying to get people to consider is what 'types of story or situation' that big thaumaturgy can totally sidestep in a story. For example, in Shadowrun, there's a spell called mind probe that lets you retrieve answers directly from a targets mind, that are as true as the target knows and understands.
This means that, say, capturing a mid-level guy in a conspiracy and mind probing him for what he knows is just something that PCs can do, or at least, get their contacts to do. It's also something that can happen to PCs. Which means that a properly simulated shadowrun world has to take this into account.
So, to rephrase the question, what uses or types of thaumaturgy (or any other Dresden files power, for that matter) seem to require changing how the DF world works (as compared to the real one) so that our expectations of actions need to change? and what are some ways the GM can anticipate and deal with them? It also helps if everyone knows about them before hand, so none are stumbled over accidentally.
So, notice in the prison break example, being able to get out of prison by opening a way into the never-never brings along it's own potential complications, already alluded to in the book.
Taking the mind probe example above, I 'ruined' an early shadowrun adventure I was in by simply kidnapping and mind probing our party up the consipracy chain of knowledge, becuase the GM hadn't thought about the requirements to compartmentalize information in the face of a mind probe. Of course, I could have rubber hosed through the conspiracy the same way, but people tend to be more squeamish about that, and it's at least believable that people could be naturally resistant to rubber hose application, while the rules provided no real ability to resist mind probes.
The GM gets points for not just banning mind probe outright, which would have also been perfectly reasonable, but it took a while of playing to work out all the ways that the world would change in response to the ability to mind probe people.