Lloyd says he has fond memories of Philadelphia dating back to 1960, when he was touring with the cast of "A Midsummer Night's Dream," and stayed in a brownstone on the outskirts of the city.
While most of his fans remember Lloyd best for his portrayal of Dr. Emmett Brown, a character who's become part of American pop culture, he was and is a "serious" actor.
This was most true in 2010, when he starred as Willy Loman in a Weston (Vt.) Playhouse production of "Death of a Salesman" and then reprised his role as Dr. Emmett Brown in "Back to the Future: The Game."
"You know, many people come up to me and say that they had an uncle or a father or someone they knew well and they saw my Willie Loman through them," Lloyd said. "It's always very satisfying to do material that has some real relevance and resonates with an audience. It was a great experience."
Lloyd says he is also grateful to the producers of "Taxi," who gave him the role of the Rev. Jim Ignatowski, which not only earned him two Emmys but made him the go-to guy for eccentric characters.
"I was delighted to do them," Lloyd said. "I liked doing character work and, subsequent to 'Taxi,' they were all - Uncle Fester ["Addams Family"], Judge Doom ["Who Framed Roger Rabbit"], Captain Kruge from "Star Trek" - eccentric, quirky characters, almost on a cartoon level."
As to why Emmett Brown has remained a favorite, Lloyd said: "Well, time travel is an innate human wish. I think everyone wishes they could go back in time to someone or someplace that's meaningful," Lloyd said. "But mostly it's because the relationship between my Doc Brown and Michael J. Fox's Marty is sort of the prototypical relationship between an older man who's a mentor to a young adolescent. I think we've all had people in our lives that just ignited an excitement and a feeling of discovery - and I feel Doc Brown does that for Marty."
Lloyd shows no signs of slowing down. He shot down rumors that he was going to be in this summer's "Sin City: A Dame to Kill For," but he did have a cameo in Seth MacFarlane's "A Million Ways to Die in the West."
"I was excited to do that and it was such a cool idea," Lloyd said. "I'm very happy if something I've done has inspired others to look at me and want to work with me.
"The same way that I'm happy Doc Brown has inspired people all over the world and opened up new worlds for them. I'm very happy about that."