Look, up on your streaming service. It’s a bird, it’s a plane, it’s all the “Superman” movies leaving Netflix on March 31.

Just as Superman is missing from the new “Justice League” trailer, he’ll be gone from Netflix in April. The original “Superman: The Movie” and the even-better “Superman II” will go, along with the lesser-regarded sequels, including the painfully bad “Superman IV: The Quest for Peace.” Even “Superman Returns,” the 2005 reboot with Brandon Routh, will go back to Krypton (or some rival streaming service that bought the rights, more likely.)

Here’s a few other good movies you might want to catch before they skedaddle on April 1:

“The Usual Suspects” — Bryan Singer’s convoluted 1995 noir seems to go on and off Netflix on a regular basis, so I wouldn’t worry too much. Although they say the greatest trick the Devil ever pulled was convincing people that they didn’t need to watch “The Usual Suspects” while they could.

“The Princess Bride” — While it may seem inconthievable that this beloved Rob Reiner fairy tale could leave streaming services — um, as you wish.

“The Escapist” — I won’t try and work in a reference to this British crime movie since nobody’s seen it anyway, but it’s a great little movie, with Bryan Cox leading a team of convicts to escape a supposedly inescapable prison.

“The Agony and the Ecstasy” — Netflix has so few movies made before 1970 that it’s a shame to see another one go. In this case, it’s the 1965 biopic starring Charlton Heston as Michelangelo painting the Sistine Chapel.

Also leaving streaming: Joss Whedon seems to be getting out of the Netflix business, as all episodes of “Firefly,’ “Buffy,” “Angel” and the first season of “DollHouse” are leaving April 1. Also gone is every episode of “The X-Files,” which makes me think FOX has other plans for all these shows.