ALERT VIEWER WHAT PLANET ARE YOU FROM? Comic fable. Starring
Garry Shandling and Annette Bening. Directed by Mike Nichols.
(Rated R. 100 minutes. At Bay Area theaters.)  Garry Shandling
is a pathetic imitation of a human being -- a clueless, sex-
driven male, which is exactly what he's supposed to be in "What
Planet Are You From?"  In this comic fable directed by Mike
Nichols, Shandling plays an extraterrestrial sent to impregnate
an Earth woman and begin a takeover of this planet, a form of
boring from within. The humor goes from extremes of dirty-old-
man blatancy to the offhand and subtle. It's good for a few
guffaws and chuckles, but in between the screen has a tendency
to stretch at the corners and go flat.  Portentous title music
accompanies a Voice of Doom announcer who explains there is only
one little problem with the takeover from outer space. This
male-only civilization is so advanced that its citizens'
reproductive organs have shrunk. Shandling, equipped with an
attachable penis and an Earth name, H