Maybe the most famous apology Mel Gibson ever made — “famous” because he’s not known for apologizing — was for a film he produced and starred in directed by the legendary Wim Wenders, of “Wings of Desire” and “Paris, Texas,” of “Submergence” and such documentaries as “Buena Vista Social Club” and “Pope Francis: A Man of His Word.”

Sayeth Mel, speaking of 2000’s “The Million Dollar Hotel,” “I thought it was as boring as a dog’s ass.” 

It’s a pity he apologized. Because he wasn’t wrong, at least in this instance.

“Hotel” began life as basically a location, a milieu stumbled-into by the Irish rocker Bono when his band, U2, were at their peak and filming the music video to the anthemic “Where the Streets Have No Name.”

As imagined by Wenders and collaborating screenwriter Nicholas Klein, it’s a mad, dull hodgepodge of characters — just a couple of them interesting — in a not-nearly-seedy-enough LA flophouse hotel, vagrants spinning yarns and anecdotes as they’re interviewed and then interrogated by a dogged FBI agent in a neckbrace played by Gibson.

It’s all in service of a murder mystery that for all intents and purposes looks like a rich, depressed junky-kid’s suicide. His daddy (Harris Yulin) is politically connected. So the FBI is here to make a Federal case out of something that happens all the time at The Million Dollar Hotel.

Gibson is the star, but the film focuses on prattling voice-over narrator Tom Tom, so-named because of his tendency to repeat himself. He’s played by Jeremy Davies in a performance as self-conscious as his gelled-into-giant ears hair.

Agent Skinner sizes the kid as up “an idiot” in instant.

“Why would you say I was an idiot?”

“Wild guess.”

Tom Tom was best friends with Izzy, the dead man. Tom Tom is easily distracted. Tom Tom is most distracted by the beautiful, flighty Eloise, played by Milla Jovovich in her last pic before the “Resident Evil” movies set her and her offspring up for life.

Agent Skinner intimidates the desk clerk (Richard Edson), and other residents played by the likes of Amanda Plummer, Gloria Stuart (“Titanic”), Bud Cort and Jimmy Smits.

But Tom Tom he has to wine and dine, because Tom Tom might actually know something, if it can be coaxed out of that fragile, damaged psyche.

The film is about as interested in this “case” as we the viewers are. So instead you focus on the cast and wonder with each, in turn, what it was that attracted them to this disaster-in-the-making.

The U2 connection? The chance to dress down, vamp “almost homeless?” Or was it the same thing that made me stop scrolling by titles and watch it — “directed by Wim Wenders.” That must’ve been what hooked Mel, who is a solid, stern presence at the heart of a lot of actors going all improvisational flakey-flighty-indulgent.

The only thing that promises to stick with me from this otherwise instantly-forgettable fiasco is Peter Stormore’s hilarious turn as a delusional guitarist who thinks he was kicked out of The Beatles and thus sings, strums and speaks just like John Lennon.

I mean JUST like John Lennon. It’s astounding to hear that voice coming out of that “Fargo” killer’s face.

Wenders’ name isn’t sullied by “The Million Dollar Hotel,” even though he’s had a lot of flops in recent decades.

But sheer strangeness is no substitute for the authority of his many documentaries on cinema and filmmakers or the magic of “Wings of Desire,” a film of singular poetry and magic.

Best not to waste the two hours of this one to appreciate the odd Mel, Smits, Plummer, Julian Sands or Stormare moment from it. Literally every other film Wenders made is better than this one — certainly the many I’ve seen, even the dogs, back that up.

Mel’s “dog’s ass” review remains the last word on the subject.

Rating: R for (profanity) and some sexual content

Cast: Mel Gibson, Jeremy Davies, Milla Jovovich, Amanda Plummer, Jimmy Smits, Richard Edson, Gloria Stuart, Julian Sands, Charlayne Woodard, Donal Logue, Ellen Cleghorne, Harris Yulin, Bud Cort and Peter Stormare

Credits: Directed by Wim Wenders, scripted by Nicholas Klein. A Lionsgate release on Tubi, Amazon, etc.

Running time: 2:02