Will Smith and Amy Poehler attended Keep Memory Alive's 17th Annual Power of Love Gala in Las Vegas this weekend, which benefited the Cleveland Clinic Lou Ruvo Center for Brain Health. The clinic, which has Vegas-based treatment centers, works specifically to combat brain diseases and help those people afflicted with them. The benefit also celebrated the 80th birthdays of iconic artists Quincy Jones and Sir Michael Caine, who are considered "celestial twins": they were born on the same day, in the same hour, within minutes of each other, but one in Chicago, one in London. They met years ago and have been close friends ever since. Click the photo to see more of the weekend's biggest events!