In 2003, Metallica hit the road on the second and final edition of their Summer Sanitarium Tour, joined by a very of-the-era roster of opening acts: Limp Bizkit, Deftones, Mudvayne and Linkin Park. That last band's Mike Shinoda recently guested on The Howard Stern Show — celebrating the impending 20th anniversary of Linkin Park's smash second album, Meteora — and looked back on the trek.