A morning mix of entertainment headlines ...

This man is wanted for police questioning. (Matt Sayles/AP)

Madonna mashed up her song, “Express Yourself” with Lady Gaga’s “Born This Way” during a tour rehearsal in Tel Aviv. Video of the rehearsal — in which she caps off the song merger by crooning, “She’s not me” — leaked online, revving up the Madonna vs. Gaga debate once again. (YouTube)

Cynthia Nixon and girlfriend Christine Marinoni got married on Sunday in New York. The couple got engaged three years ago at a same-sex marriage rally. They’ve been together since 2004 and have a one-year-old son. Nixon also has two children from her previous relationship with Danny Mozes. (People)

First lady Michelle Obama and daughters Sasha and Malia Obama apparently enjoyed the Beyoncé concert at Revel on Saturday night. “Irreplaceable” and “Single Ladies” were particular favorites. (New York Daily News)

Robert De Niro offered some quality tongue-in-cheek advice to graduates when he spoke during the weekend at the Bates College commencement in Maine. “With all due respect to Gwen Ifill and Bonnie Bassler,” he said, referring to his fellow honorary doctorate recipients, “I think this is the most important piece of advice you’ll get today: Become a movie star.” (Boston Herald)

Nina Dobrev and Ian Somerhalder of “The Vampire Diaries” spent a reportedly romantic weekend in Paris, which involved photos being taken of them being romantic. (Popsugar)

Here’s a fascinating interview with Bill Paxton, in which he discusses many of his previous roles and reveals the following about his character, Chet Donnelly, from “Weird Science”: The line about the greasy pork sandwich “was something my dad used to say to me and my brother if he thought we had been at a beer bust on Saturday night and we were all hung over at breakfast the next morning. He would come in and ask, ‘How about a nice, greasy pork sandwich served in a dirty ashtray?’ [Laughs.] A lot of that stuff was my father’s.” Now we know. (The A.V. Club