There's a nice scene in Woody Allen's "Hannah and Her Sisters" where Mickey thinking of his mortality, walks in a movie theatre to watch the Marx Bros:

MICKEY (V.O.)
My head was, was pounding, and,
and I had to sit down.
I went into a movie house.
I-I didn't know what was playing or
anything.

Mickey walks into the movie house. He is seen through the
glass doors, which still reflect the street and traffic
outside. He makes his way through the lobby into the actual
theater.

MICKEY (V.O.)
I just, I just needed a moment to
gather my thoughts and, and be
logical, and, and put the world
back into rational perspective.

The film abruptly cuts to the theater's black-and-white
screen, where the Marx Brothers, in Duck Soup, play the
helmets of several soldiers standing in a line like a live
xylophone. The sounds of the "xylophone" are heard as the
movie cuts to the darkened theater, where Mickey slowly sits
down in a balcony seat. The "xylophone" music stops and
changes to "Hidee-hidee-hidee-hidee-hidee-hidee-ho" as sung
by the Marx Brothers and ensemble in the movie. The singing
continues faintly in the background as Mickey continues his
tale:

MICKEY (V.O.)
And I went upstairs to the balcony,
and I sat down
(sighing)
and, you know, the movie was a-a-a
film that I'd seen many times in my
life since I was a kid, an-and I
always u-uh, loved it. And, you
know, I'm, I'm watching these
people up on the screen, and I
started getting hooked o-on the
film, you know?

The film cuts back to the black-and-white movie screen as
Mickey continues to talk. The Marx Brothers, as well as the
hundred-odd other cast members in Duck Soup, are kneeling
and bowing as they sing "Hidee-hidee-ho." They kick their
heels up in the air. They sway back and forth, hands
clasped, singing "Oh-h-h-h-h-h..."

MICKEY (V.O.)
...And I started to feel how can
you even think of killing yourself?
I mean, isn't it so stupid? I
mean, l-look at all the people up
there on the screen. You know,
they're real funny, and, and what
if the worst is true?

The movie cuts back to Mickey, sitting almost obscured in
the dark theater. The Oh-h-h-h-h-h's coming from the
offscreen movie are heard as he continues to speak.

MICKEY (V.O.)
What if there's no God, and you
only go around once and that's it?
Well, you know, don't you want to
be part of the experience? You
know, what the hell, it-i-it's not
all a drag. And I'm thinking to
myself, geez, I should stop ruining
my life...

As Mickey talks, the film cuts back to the antics of the
Marx Brothers on the black-and-white theater screen. The
four brothers are now swaying and singing and strutting,
their voices indistinct over Mickey's narration.

MICKEY (V.O.)
...searching for answers I'm never
gonna get, and just enjoy it while
it lasts. And...you know...

The film is back on Mickey's dark form in the audience.

MICKEY (V.O.)
...after, who knows? I mean, you
know, maybe there is something.
Nobody really knows. I know, I
know "maybe" is a very slim reed to
hang your whole life on, but that's
the best we have. And...then, I
started to sit back, and I actually
began to enjoy myself.


I really love that scene!

For me recently, this life saving "Worth Staying" moment is realizing why I love Sofia Coppola and The White Stripes:

This might make life worth Living!