Depends on what you mean by "artistic movies". There are things called "art films" that are usually some experimental, foreign, or small studio release, but maybe you mean films with an art-related topic?
I'm going to answer the latter, and hope this is what you want. In no particular order:
"The Agony and The Ecstasy" starring Charlton Heston as Michelangelo and Rex Harrison as the Pope. It's about the painting of the Sistine Chapel.
"Lust for Life" starring Kirk Douglas as the tortured but brilliant Vincent Van Gogh. Anthony Quinn co-stars as his friend and drinking buddy, painter Paul Gauguin.
"Vincent and Theo" starring Tim Roth as Van Gogh and Paul Rhys as his brother Theo. Explores the relationship between the two brothers.
"Artemisia" starring Valentina Cervi as painter Artemisia Gentileschi who ended up in a scandalous rape trial involving her mentor Agostino Tassi (she continued to have sex with him after the initial rape expecting him to marry her).
"Klimt"starring John Malkovich as the Austrian painter Gustav Klimt, famous for his use of gold leaf in paintings of often erotic subject like "The Kiss".
"Edvard Munch" (made for TV) starring Geir Westby as the Norweigan Expressionist artist who painted "The Scream".
"Surviving Picasso" starring Anthony (Hannibal Lector) Hopkins as Pablo Picasso. Focuses on his relationships with various women, including mistress Francoise Gilot (played by Natasha McElhone) whose point-of-view is used to tell the story. Joss Ackland plays Henri Matisse.
"The Girl With the Pearl Earring" starring Scarlett Johansson as the girl depicted in the Vermeer painting by the same name. Johnansson bore a remarkable resemblance to the real model. Colin Firth starred as Johannes Vermeer.
"Frida" with Salma Hayek as Mexican painter Frida Kahlo. Alfred Molina played her husband painter Diego Rivera. Suffering terribly throughout her life from the results of a horrendous freak accident in her youth (a steel pole went through her body during a streetcar accident), and from a rocky relationships, she poured her pain into powerful, often disturbing images in her art.
"Pollock" starring Ed Harris as American painter Jackson Pollock who the critics onced dubbed "Jack the Dripper" because he often dripped or flung paint across his canvases.
Artists are popular subjects for movies. Often movie biographies take great liberties with the facts, but most showcase the art they create and its a painless way to introduce yourself to an artist's works.
Mostly off the top of my head (I've seen most of these films), verified by http://www.imdb.com