Astro Daters and Grindhouse Bumpers

Background
This is a fan nickname given to probably the single most infamous set of theatre snipes ever made, created by the National Screen Service in the late 1960s.

(1960s-?)
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Nicknames: "And Now, Our Psychedelic Feature Presentation", "FP of Psychedelicness", "Feature Presentation in the Sixties", "The World's First Feature Presentation ID", "The Grindhouse Vortex", "Psychedelic Vortex"

Bumper: On a multi-colored psychedelic screen, one of the following snipes appears from all sides and corners, merging at the center:
 * Our Feature Presentation
 * Prevues of Coming Attractions
 * Intermission
 * Coming Soon
 * Our Next Attraction
 * Starts Friday
 * Starts Saturday
 * Starts Sunday
 * Starts Monday
 * Starts Tuesday
 * Starts Wednesday
 * Starts Thursday
 * Friday Saturday
 * Friday Saturday Sunday
 * Saturday-Sunday Matinee
 * Sunday Monday Tuesday Wednesday
 * Also
 * And
 * Also Selected Short Subjects
 * Late Show Friday & Saturday
 * Children's Matinee
 * No Smoking in This Theatre

Variants:
 * Sometimes, the snipes would demerge and return the way they came.
 * The merge is faster on some snipes.

FX/SFX: The psychedelia in the background, and the text movement.

Music/Sounds:An abridged version of the '60s go go-like tune called "Funky Fanfare" by Keith Mansfield. Sometimes it's silent.

Availability: Various, ranging from uncommon (Our Feature Presentation and Prevues of Coming Attractions) to extinct (several of the lesser-known Daters). Used at drive-in theaters by various companies in the 60's and 70's. Made a surprise reappearance on certain Robert Rodriguez and Quentin Tarantino films, such as Kill Bill: Volume 1 (2003), Machete Kills (2013), and the 2007 double feature Grindhouse (Planet Terror/Death Proof).

Editor's Note: This is a cult classic among moviegoers.