Heavy Metal BRET MICHAELS On ‘Late Night With Conan O’Brien’; Video Available January 19, 2008 Atomm Leave a comment POISON frontman Bret Michaels was a guest on NBC’s “Late Night with Conan O’Brien” last night (Friday, January 18).Source POISON frontman Bret Michaels was a guest on NBC’s “Late Night with Conan O’Brien” last night (Friday, January 18).Source