Lost amid constant dispatches by the likes of Star magazine and Us Weekly from the set of The Break-Upwas the fact that the film was a true labor of love for Vince Vaughn.Besides starring as tour guide Gary Grabowski - opposite JenniferAniston, as you may have heard - Vaughn also served as a producer andcame up with the story. Given such a position of power, he made surethe film was peppered with some of his favorite things, including hisparents (Vernon and Sharon), one of his best friends (his Swingers cohort Jon Favreau), and one of his favorite bands (the Old 97's, who appear in a concert scene).

But Vaughn's most beloved costar, perhaps, is the city in which The Break-Upis set: his hometown, Chicago. So it's not surprising that, with thefilm coming out from Universal Studios Home Entertainment on DVD onOctober 17, Vaughn has delved even deeper into his attraction to theWindy City. Though the disc includes the usual extras - ­making-ofshorts, deleted scenes, outtakes, commentaries (one with Vaughn andAniston, and another with director Peyton Reed), and so on - the realtreat is Three Brothers: A Tour of Chicago. It's pretty muchexactly what it sounds like, as Vaughn channels his onscreen characterand guides viewers on a trip to some of the city's noteworthy locales.

Hereare a few things I learned from taking Vaughn's virtual tour. Well,beyond the fact that he has a future as a tour guide, should he decideto give up on the Hollywood thing.

1. Wrigley Field
The home of the Chicago Cubs is also the location of The Break-Up'sfirst scene, wherein Vaughn's and Aniston's characters meet and begintheir inextricable slide toward the title of the movie. "By opening themovie here, it really celebrates it as a Chicago movie, which is verymuch a character in the story," says Jay Lavender, a writer andcoproducer.