BEGINNING THIS WEEK at the Smithsonian and elsewhere around the country, the biggest band in the world can now be seen in 3-D. At a screening last week, I took in the experience, known as U23D, at the National Museum of Natural History’s IMAX theater, with a screen height of more than 60 feet.

If you think the band has either (a) sold out ever since Brian Eno introduced synthesizers or (b) is overrated, you can stop here. If you’re the type who just bought the 20th anniversary commemorative Joshua Tree CD to get a hold of previously unreleased tracks like “Drunk Chicken/America” (and none of it really enjoyable), please read on.