My suggestion is "Kiss Daddy Goodbye", a sweet little "horror" film from the 1981 Southern Ca. Malibu area.

It has young telekinetic/telepathic twins-- or maybe just siblings, a zombie dad in a three piece suit, and a lame evil biker gang. The credits are magic markered on to photographs, and the already mentioned zombie dad gets to burrow through the beach sand like a mole-- again in a three piece suit.

The film sort of confuses day and night from shot to shot, thinks that kids playing an Atari 2600 is inherently creepy, and has some mean surfers telekinetically(?) forced to fall down into some caca.

Pretty low on gore-- I honestly can't think of a gory part in it-- and pretty high on laughably bad acting and off editing. Special bonus: it stars former swinging teen idol Fabian, Marilyn Burns from the original "Texas Chainsaw Massacre", Jon Cedar from "Day of the Animals" and a girl named Gay French.

The film takes itself way to seriously and is already pretty funny without riffs. I think it could be some pretty good stuff w/ riffs.