Sorry if there is already a thread on this (I searched a bit; didn't see one), but it's worth talking about.
If you have a Roku device (or a newer TV with Roku), you owe it to yourself to download the "B Movie TV" channel (also get Pluto and Shoutcast for Mst3K and Rifftrax; and you might as well pick up "Beta Max" channel, a catalog of old terrible movies).
B Movie TV isn't a catalog; it's a streaming channel of schlock, shorts, movie review segments, trailers, and feature films. The trailers and commercials are hilarious -mostly, the commercials are off-the-wall (but sometimes a local affiliate too). The trailers lately: Fantastic Four (1991), Cathy's Curse, The Tormeted, Pieces, and the Tattoo Connection blaxploitation flick.
They have a general theme each day: Martial Arts Monday, Terror Tuesday, Sci Fi Wednesday, Action Thursday, Documentary Night Friday, with the weekend showing reruns of previous prime time slots. They have some cool review segs (final 30), midnight owl theater, Saturday morning anime cartoons, Saturday evening gimmic wresling, Saturday midnight sleaze, and Sunday night Pervy the Clown show. Recently the folks that run the channel did their own slasher shorts called Death Park 1 through 4, which are pretty tasty.
What's pretty cool about it is their FB group/fan page where members sometimes do a virtual streaming party, commenting together on the film/scenes in real time (and the channel owner/mod gets in on the action too).
Totally worth it (free channel, but the commercials are better than most ads)
My favorite aspect of all, they air a Cynthia Rothrock/Richard Norton movie at least once a week, sometimes twice.
Here's their clip of Death Park 1: