It's one of the most respected and loved musicals in the canon amongst theater folks. Amongst the general public, opinion is divided. Personally, I think it's one of the greatest ever written.
"Inspired by the painting, A Sunday Afternoon on the Island of La Grande Jatte by Georges Seurat, Sunday in the Park with George, Stephen Sondheim and James Lapine's stunning masterpiece, merges past and present into beautiful, poignant truths about life, love and the creation of art. The Tony- and Pulitzer Prize-winning musical is split into two acts with the same cast playing different characters. The first centers around George, a fictionalized version of Seurat who is immersed in painting his masterpiece with help from his muse Dot. The second focuses on George’s great-grandson (also named George), a contemporary artist who invites his grandmother Marie to help him present his latest work."