A lot of stars, old and new, and they make this one of the better times i've had watching a comedy. When a movie goer doesn't look at their watch during the movie, THAT's a good movie.
I laughed a couple dozen times and was smiling a good portion of the rest of the time.
I'd say see this movie, even if you don't like will farrell all that much (which I can't identify with), you should take the time to catch it.
It would be just as effective buying it or renting it when it comes out on dvd due to the cinematography and the type of movie it was so even if you're not a theater goer you would be missing out if you catch it at home in 5 months or so.
After Credit Content: It's there and it's unremarkable. this was the only thing I wasn't all that impressed. You can watch it if you like but it's an 'out take' and it's not a very funny one.
All being taken into account, i should say again, see this movie. It's hilarious and well worth the $8-11 for the movie ticket or the $20-26 dvd.