Art is a subjective medium. What you may find appealing, others may consider passé. And what inspires others may leave you feeling flat. This happens on a grander scale, as well, with various styles and artists coming into and out of fashion - often as a reflection of the times. Artists, too, are always changing their personal style.
Often, famous painters' first paintings reveal the seed of talent that will eventually blossom into immortal fame. By the same token, last paintings of famous artists can reveal the mindset of the painters as they look back on their career. Check out these first and final works of renowned artists, and vote up the ones that are truly sublime.