In honor of the "Bill & Ted" film franchise, the 13th annual "Bill & Ted Day" is being celebrated around the world this Sunday, June 9th, dude!

Official Bill & Ted Day Facebook Event Page

Members of the cast and crew of the film have been known to participate before, including Alex Winter (Bill), William Sadler (The Grim Reaper), Terry Camilleri (Napoleon) Amy Stoch (Missy), original princesses, Diane Franklin and Kimberley Kates, Bogus Journey director Peter Hewitt, Ed Gale (Station), and Jane Wiedlin (Joan of Arc).

In previous years, the television networks Comedy Central and IFC have shown both Bill & Ted's Excellent Adventure and Bill & Ted's Bogus Journey during the week of Bill & Ted Day.

If you don't know what we're talking about, you should really check these films out, now.