Oprah Winfrey brings her "Aha" show to the Sphere, turning decades of hard-won life lessons into an immersive experience where the venue's massive screens and shifting soundscapes make her storytelling feel less like a lecture and more like stepping inside a memory. Over at Allegiant Stadium, Oasis reunites for a long-awaited run through their Britpop catalog, with Richard Ashcroft opening the night before the Manchester brothers lead 65,000 fans through anthems like "Wonderwall" and "Don't Look Back in Anger." For something more intimate, Mark Shunock marks thirteen years of Mondays Dark at the Palazzo Theatre, gathering performers from across the Strip for an unpredictable variety night that mixes charity with genuine Vegas camaraderie.