Maya Forbes and Wallace Wolodarsky‘s The Polka King is a briskly paced, broad-brush tragicomedy that’s aimed at the none-too-hips. It’s funny and engaging as far as it goes — a kind of regional (i.e., Pennsylvania-based) farcical screwball thing. It has a tightly sprung comic attitude, and is packed (as you might presume) with traditional polka music, colorful, behind-the-eight-ball characters and all kinds of local douchebag flavor.

It’s a bit like The Wolf of Wall Street in that it’s about a manic, larger-than-life polka-singing hustler — the real-life Jan Lewan — who ponzi-schemed his way into a five-year jail sentence about 15 years ago. The difference is that while Wolf was a half-satirical portrait of predatory financial-market culture, Polka King is about a guy who tries to flim-flam his way out of financial difficulty only to wind up in an even deeper hole.

You know going in that the buoyant, Polish-born Jan (entertainingly nailed by the great Jack Black) is headed for a fall, so the movie is basically a waiting game — how long before Jan’s bullshit finally catches up with him? The Polka King therefore lives or dies based on how diverting or hilarious you find delusion and denial as the hallmarks of a business plan.

I for one didn’t find it hugely amusing –the only film about relentless lying and flim-flammery that I’ve liked was Robert Zemeckis‘ Used Cars — but I took the ride and had a decent-enough time. I recognize that others who caught The Polka King last night (as I did) are down with it more than I, and that it may well prove a commercial success.

On top of which The Polka King contains Jenny Slate‘s plucky performance as Jan’s half-ambitious, half-nutball wife, Marla, and the always winning Jason Schwartzman as Mickey, a sad-sack type friend and bandmate of Jan’s. But the strongest, most memorable supporting performance is given by the great Jacki Weaver as Jan’s constantly denigrating mother-in-law.

The Polka King is “fun” to watch as far as it goes. It’s one of those “wow, what an asshole but he sure was good at bullshitting people while it lasted” movies. It’s basically aimed at megaplex audiences, and there’s nothing wrong with that. I liked more than loved it, but it’s fine.