Analysis of information sources in references of the Wikipedia article "Step Brothers (film)" in English language version.
But to make it more of a challenge, Ferrell and company sing most of the commentary, accompanied by Jon Brion, who vamps while the boys free-associate about the movie-making process, their characters' off-screen lives, and the exorbitant price they had to pay for a pair of fake testicles. Because it's all spontaneous, the commentary ranges from the inspired to the irritatingly prolonged, but when Ferrell and Reilly really get into a good groove, they're actually funnier than the main feature.
