Ballyard shenanigans, eccentric visionaries and dark doings in the world of oenophiles and ticklers are among the subjects of these wildly entertaining documentaries.

‘Screwball’ (2018)

It’s a sign of how little respect the director Billy Corben has for the men involved in a Major League Baseball doping scandal that the re-enactments in “Screwball” are performed entirely by children. Wearing wigs, crudely pasted facial hair, spray tans and bulging fake muscles when necessary, the kids lip-sync testimony from various South Floridians involved in the Biogenesis scandal, which ensnared several MLB stars in 2013, including Alex Rodriguez. The gambit isn’t entirely necessary, if only because a story this stupefying doesn’t need artificial enhancement. But when one witness talks about Rodriguez pulling silly faces to throw him off at a deposition, Corben finds some justification for his schoolyard conceit.

Stream it on Netflix.

‘Shirkers’ (2018)

There was no independent film scene in Singapore when Sandi Tan was a culture-crazy teenager there in the early ’90s, so she and her best friend, along with a mysterious mentor twice their ages, decided to created one themselves. Tan set out to make her own answer to Jean-Luc Godard’s “Breathless,” a personal and playfully experimental road movie set on an island nation it takes only 40 minutes to drive across. But then that older mentor, a blue-eyed American film director named Georges Cordona, absconded with 70 16-millimeter film canisters, dashing Tan’s moviemaking dreams. Finally having recovered the footage after Cordona’s death, Tan assembled it into “Shirkers,” an inspired and delirious memoir about her youth and the film that might have sparked a career.