Jake Gyllenhaal on Working With Robert Downey Jr. in “Zodiac“

Jake Gyllenhaal expresses his admiration for Robert Downey Jr., who taught him a technique to memorize his lines. Get more Howard Stern by signing up for a free SiriusXM trial: SUBSCRIBE for more videos: Want to know what’s going on with Howard Stern in the future? Follow us on Twitter: On Facebook: On Instagram: For more great content from the Howard Stern Show visit our official website: #HowardStern #SternShow