Before I got IXS I read this guide on GameFAQs, which noted an interesting glitch:
Then in 2010 this guy found that something similar could happen at the garage if you got out of a car while underneath it:
It's pretty easy to do, and you don't have to be in that exact spot for it to work:
For a while I suspected this would work with any building, but I don't remember if I ever tested it or not. Well, I did just now, and used Xiron's cheat engine table to get Pepper stuck inside the police station:
Also the helicopter's position changed somehow but I dunno what happened there lol.
What I really wanna know, though, is why the game is sticking the name of the building Pepper's stuck in into the list of tricks you're doing...
Oh, and while doing this usually means you get stuck forever, I did manage to break free at the Res-Q Center after a long string of tricks one time (in 2010 going by the date I originally uploaded this screenshot to Brickshelf), which resulted in a score so high the UI broke: