I love this movie, it's so funny. No, there is nothing wrong with being called to Boise, people there are looking for the Gospel as well as anywhere. For someone who lives in Utah, however, it's just not thought of as that much of an adventure.
Most future missionaries dream in serving outside their country, specially in a far away land where they speak another language, to be called to Idaho is a bit disappointing but Hey! The guy at the end looks very happy with his mission call.
What movie was that from? Looks really funny. I don't think there's anything wrong with being called somewhere that has lots of members. There's a reason people go to those places, and there is work to be done... to say they're disappointed would be kind of selfish.