That said: Fun movie!
While the Pym Technologies building on Treasure Island was CGI, it's certainly not a far stretch to imagine San Francisco as the epicenter of groundbreaking technology. It's also not difficult, in a modern San Francisco of extremes, to imagine Scott, fresh out of San Quentin, sharing a small Tenderloin efficiency apartment with three other societal outcasts. In fact, my only quibble with the movie's authenticity where this point is concerned is the fact that as a newly released ex-con, Scott would surely be required to live in a halfway house for a certain number of months. But I'm not his parole officer, so what do I know?
Authenticity: 8/10- For a film about shrinking humans down to insect size, the other aspects of the plot are fairly realistic.
Paul Rudd's Pretty Pretty Face Score: 10/10- It would almost be bearable if there were rumors about what a huge asshole he is. But by all accounts, he's a great guy. UGH.
Overall: Considering it's the type of film that inevitably advertises its sequel in a post-credit scene, I found it surprisingly enjoyable. Besides, if a sequel means a better chance of seeing Paul Rudd in my city, I'm all for it.