MoMA is home of Andy Warhol's Campbell's Soup Cans and his other works:
Note: This isn't a permanent fixture at the museum. This Warhol exhibit ends in mid-October, but I'm pretty sure that Warhol's works always makes a comeback at MoMA frequently.
Henri Rousseau, La Bohémienne endormie (The Sleeping Gypsy), 1897.
Paul Gauguin's The Seed of the Areoi, 1892.
Henri Matisse's The Dance I, 1909.
Henri Rousseau's The Dream, 1910.
Salvador Dalí's The Persistence of Memory, 1931.
(This one is much smaller in person!)
Roy Lichtenstein's Drowning Girl, 1963.
( "I don't care! I'd rather sink than call Brad for help!" )
Roy Lichtenstein's Girl With Ball, 1961.
Paul Klee's Cat and Bird, 1928.
Pablo Picasso's Girl Before A Mirror, 1932.
Frida Kahlo's Self-Portrait with Cropped Hair, 1940.
Gustav Klimt's Hope II, 1907-1908.
(This one is unique and rare because seldom are there art works that depict pregnant women/pregnancy)
Andrew Wyeth's Christina's World, 1948.
René Magritte's The False Mirror, 1928.
And MoMA's most famous/popular painting (a permanent fixture):
Vincent van Gogh's The Starry Night, 1889.