Continuos long shots are complicated, but awesome. They are hard to do without a steady cam, but they are a great way to show off the space in which the characters are located as well as showcase the writing by not having any distracting cuts.
Other long, continuos scenes include the opening to Goodfellas, the intense CGI scene from Hugo, and the sequence before the closing number of High School Musical. Yes, I am serious. Go watch it and tell me it isn't impressive!