DEAR STACY: "The OA" is my new favorite show. Please help me prove to my friend that the actor who plays Hap is the same actor who played Lucius Malfoy in the "Harry Potter" movies. — Savannah E., Alhambra, California
DEAR SAVANNAH: Yes, indeed. Liverpool, England-born protean actor Jason Isaacs plays Dr. Hunter Aloysius Percy, "Hap," in the sci-fi fantasy Netflix series, and, sporting platinum locks, he portrayed Lucius Malfoy as well. His long list of credits also includes playing crime boss Michael Caffee in the series "Brotherhood," and villainous Col. Tavington in the big-screen "The Patriot."
DEAR STACY: We were talking about our favorite part of the Super Bowl — the commercials, of course! Would like to know which celebrity has made the biggest bundle for doing such an ad? — SYN
DEAR SYN: Kate Upton reportedly made $1 million for the lavish 2015 Game of War ad that showed her in a milk bath, according to the New York Post. Arnold Schwarzenegger may not get the "Apprentice" ratings of his predecessor, but he took home a reported $3 million for a 2014 Bud Light spot. Brad Pitt famously earned more than $4 million for a Heineken ad aired one time only, during the 2005 Super Bowl.
DEAR STACY: Are Erika Christensen and Hayden Christensen sister and brother, or are they related in any way? — Jill7D7
DEAR Jill7D7: No, despite their shared surname, the "Parenthood" actress and "Star Wars" actor are not related. Hayden hails from Vancouver and has two sisters, Kaylen and Hejsa. Seattle-born Erika, who was raised in LA, has two brothers, Brandon and Dane.
DEAR STACY: I'm a big fan of "I Love Lucy" and have watched the shows many times over. I have never seen a show that takes place around Christmas involving the Ricardos and the Mertzes. Was there a reason for that? — GloriaHG
DEAR GLORIAHG: Actually, there was a special Christmas installment of "I Love Lucy" that aired Christmas Eve of 1956, but is not part of the syndicated rerun package that viewers have been enjoying for decades. That's why it's often referred to as "the lost episode." It has Lucy, Ricky, Fred and Ethel decorating a tree and reminiscing, and makes use of flashbacks. It's included on "I Love Lucy — The Complete Sixth Season" collection.