10. Clerks: Dante Is Shot Dead
Indie classic Clerks is an eventful movie which ends on an uneventful note. Randal makes tracks and tosses his homemade sign at Dante while hollering "you're closed". Although this one in keeping with the monotony of menial labour, as Kevin Smith sought to convey, the director shot another conclusion nobody would have forgotten.
In Clerk's alternative ending, the camera continues to run after Randal has left the scene. Moments later, a robber enters the store and guns Dante down in cold blood, making his "not even supposed to be here today" line more tragically ironic.
Smith admits he was unsure about how to wrap up Clerks, but he shot this ending because he believes movies which end with the death of a character leave more of an impression. This murder straight out of left field certainly would have achieved that.
Although killing Dante is mean spirited and may have prevented the other View Askewniverse films from happening, his death would have worked well as a callback to Dante's line about The Empire Strikes Back ending "on such a down note".