Christopher Lloyd, probably best known for his role as Doc Brown in the “Back to the Future” trilogy, has a modestly sized cottage in fancy-pants Montecito, Calif., up for sale at just under $1.7 million. The three-time Emmy winner, who made his acting debut in the seminal 1975 film “One Flew Over the Cuckoo’s Nest,” hopes to double his money on the comprehensively updated 1950s Spanish bungalow he scooped up just over five years ago for exactly $800,000.