On Aug. 28 at the Sentient Bean Coffeehouse, the Psychotronic Film Society continues its long-running, award-winning weekly Wednesday night showcase of overlooked, underrated or just plain obscure feature films from around the world. This time, they’ll screen the laughably inept, ultra-low-budget 1982 sci-fi thriller “Nightbeast.”

It was written and directed by the late, legendary Maryland-based DIY filmmaker Don Dohler, whose output mostly consisted of repeatedly remaking the same “evil space alien on a rampage with a raygun” that he first shot in the late 1970s. It’s a deadly serious action drama pitting rural, Baltimore-area law enforcement with, you guessed it, an evil space alien on a rampage with a raygun. The alien is little more than a guy wearing an ill-fitting rubber mask and fake hands, and its high-tech weapon looks suspiciously like a toy from a dollar store.

Filled with amateurish acting, ludicrous dialog and bargain-basement special effects, it’s a charming testament to the dedication a small, devoted crew of glorified amateurs can put into something they truly care about – regardless of how unlikely it is to actual amount to anything of note. Best of all, none other than J.J. Abrams — Emmy Award-winning writer, director and producer from such massive hit properties as “Regarding Henry,” “Mission Impossible III,” “Super 8” and the rebooted “Star Trek” and “Star Wars” franchises, TV’s “Lost,” “Alias,” “Felicity” and “Fringe” — got his very first onscreen credit for working on this $50,000 turkey that has earned a small, but devoted cult following worldwide.

Fans of MST3K-quality “so-bad-it’s-good” duds will find much to love about “Nightbeast,” and the fact that the Bean offers discounts on craft beer and organic wine during the show will make the whole thing that much more entertaining. Showtime 8 p.m.