It is a truth universally acknowledged among joggers, businesses travelers, and insomniacs that an iPod loaded with intelligent and entertaining podcasts is a marvelous possession. If you are looking for something new, try the American Icons series presented by Kurt Anderson’s Studio 360. The series profiles everything from literary works (The Great Gatsby, Moby Dick) to historic sites (Jefferson’s Monticello, the Lincoln Memorial) to American pop culture icons (Buffalo Bill, Harley-Davidson, Barbie). The documentary style is lively and amusing, offering fresh perspectives on American society. (Free on iTunes or at www.studio360.org.)