No, it’s not a horror film, and nor does it hark from the 1950s. Attack of the Slime People (US-2008; dir. Martin King) is an independent comedy about a rather unstable independent filmmaker in the 50s, who gets a chance to produce his B-flick opus and grasps the opportunity with maniacal fanaticism.
Buddy Flavanoid is a washed up Hollywood director trying to make his big comeback and cement his place in history as one of the greats. He sets out to make a monster movie about slime people but ends up himself becoming a monster of sorts, murdering (with a baseball bat of all things) anyone who threatens to get in the way of his “uncompromising vision.” (Independent Film Reviews)
The film is reported to have excellent production values, to be very funny and to feature an excellent, if rather extreme, performance by Robert Tiffi as the loopy wannabe Ed Wood.
Below are some scenes from the film: