Books are great: they're excellent at propping open doors, are perfect for all your money/gun/flask-hiding needs, and if you stack them under your butt, you look like a big boy at the dinner table! For books you'll want to read, check out Taschen.
One of the first shops to open in the swanky new building at Lincoln Rd's west end (designed by the firm responsible for China's "Bird's Nest" Olympic stadium), Taschen started as a rare comic shop in Germany in the '80s and now publishes handsome limited edition books loaded with plentiful photos focusing on design, photography, pop culture, and sex, which may help give culture some company (that means a boner). Sexy stuff includes The Big Book Of Breasts, The Private Collection, a five-volume set of the magazine that pioneered super-raunch poon in Sweden, and a massive six-volume limited edition anthology of Playboy from 1953 to 1979, with select centerfolds, writing by Norman Mailer and Jack Kerouac, and interviews with John Lennon and Richard Nixon (included in the anthology despite its declaration "I am not a book!"). Other sweet stuff: 20th Century Classic Cars: 100 Years Of Automotive Ads, plus Neil Leifer's Ballet In The Dirt: The Golden Age of Baseball, and his Guts And Glory: The Golden Age Of American Football, 1958-1978, with pics of Vince Lombardi's dynasty, the Dolphins' perfect season, and Y.A. Tittle, who sounds like he should be in that Playboy book.
There's also pop culture stuff like Horror Cinema, a visual history of movies that scare the crap out of you, photo-bios on the likes of Hendrix, Michael Jackson, Dylan, and Marley, and upcoming titles like The Big Butt Book, though doesn't that describe any stoic tome that helps you get at your Hamburger Helper?