The Happytime Murders may not be a timeless classic on par with Roger Rabbit, but it’s more interesting and nuanced than its raunchy, violent humor suggests. The puppeteering is fantastic, the characters are interesting, and although the story isn’t ingenious the jokes are usually funny.

It's more than funny enough, packing lots of genuine, if frequently tasteless, laughs into its relatively brief running time

There are a few spiky moments of sick, WTF fun (a bout of rough sex that ends with a Silly String climax; the first time a puppet drops an F-bomb), but mostly it feels like a promising idea poorly executed.

The one-joke nature of this adults-only spoof wears out the film’s welcome, even if director Brian Henson and his talented crew never let us see the strings.

Some viewers, perhaps, might be shocked at the association of Mr. Rainbow Connection with scenes set in porno shops, strip clubs, and drug dens. What jolted me, though, was seeing the Henson name all over a project that’s so often bland and listless, so tame in its designs, so limited in its imagination, so joyless in its execution.