Star Wars Holiday Special (thing)

Quite possibly the worst television program ever made. It aired on November 17, 1978 on CBS.
Avalyn's writeup supercedes mine, so here's a transcript of a TV Guide advertisement of that dreaded show.

---

AN ALL NEW TELEVISION SPECIAL

A long time ago,
in a galaxy far,far away...

STAR
   WARS_tm
HOLIDAY SPECIAL

Starring
MARK HAMILL
as Luke Skywalker^tm
HARRISON FORD
as Han Solo^tm
CARRIE FISHER
as Princess Leia^tm

With   
ANTHONY DANIELS   
as C-3PO^tm
PETER MAYHEW   
as Chewbacca^tm
R2-D2^tm
as Himself   

And    JAMES EARL   
JONES   
as the voice of   
Darth Vader^tm

Luke Skywalker and Han Solo battle evil imperial forces
to help Chewbacca reach is imperiled family on the Wookee planet--
in time for Life Day; their most important day of the year!

WITH THEIR SPECIAL GUEST STARS:    DIAHAN CARROLL               
              BEATRICE ARTHUR    THE JEFFERSON STARSHIP     
                 ART CARNEY    AND HARVEY KORMAN        

8PM CBS 2