Actor Ryan Reynolds has been spending most of his time in Boston to film “R.I.P.D.,’’ but he’s still causing a stir in New York and Los Angeles. The real estate website Zillow reported today that Reynolds is selling the Hollywood Hills home he bought for $1.7 million in 1997 for about $1.6 million. And US magazine reported today that Reynolds spent last Friday in New York on a date with actress Olivia Wilde. Maybe he’ll bring her to town and take her to the restaurants he’s been visiting on Stanhope Street. … Speaking of “R.I.P.D.,’’ the Hollywood Reporter says that Reynolds’s newest castmate in the Boston-based ghost-cop movie is Robert Knepper, best known as “T-Bag’’ on “Prison Break.’’ The “R.I.P.D.’’ crew filmed today at Mount Auburn Cemetery.