Renowned character actor Christopher Lloyd won over critics and audiences alike with the wide array of quirky, off-beat characters he brought to life on the big and small screens. A former Broadway actor, Lloyd seemed to spring from nowhere to earn a number of Emmys for his role as burnt out ex-hippie Jim Ignatowski on the acclaimed sitcom “Taxi” (ABC, 1978-82; NBC, 1982-83). Of the many times he portrayed mad scientists and inventors with unkempt hair and elastic facial expressions, his biggest legacy was that of bringing to life eccentric garage tinkerer Doc Brown in the blockbuster “Back