Five Questions with … Jason Schwartzman

The first time Jason Schwartzman was on David Letterman’s show, the young actor had a case of the nerves. “I walked out there and it was like being on a roller-coaster ride,” says Schwartzman, now 21. “He’s awesome! I love him. I want to campaign for him to be on Oprah. I don’t know why she won’t have him on. He’s great.” The feeling must be mutual. Schwartzman is scheduled to appear on Letterman’s gabfest twice this week. On Wednesday, his band, Phantom Planet, will perform a song from the new album “The Guest.” The following evening, Schwartzman returns solo to hype his latest film, “Slackers,” which opens Friday.