New clips from the Lost Season Five DVD set prove that pretending the time/space continuum is turning the sky white and splitting your head open is harder than you'd think. And discover the secrets of the Kate/Juliet 'ship.

Lost Season Five comes out on DVD next Tuesday, Dec. 8, to give you a couple of months to relive the time-traveling insanity before the show returns for its last season. Here are some early preview clips:

Bloopers:

Filming the "White Light" sequences was a major headache:

Building 23 And Beyond with Michael Emerson:

The Others' Secret:

Kaliet:

Deleted Scenes:

Behind The Scenes: He's Our You: