What’s Hot This Weekend 04/15/11

This week: Arcade Fire, Robyn, Jenny and Johnny, Mumford and Sons, Nas and Damian "Jr. Gong" Marley, Brandon FLowers, Bruse Hornsby, Led Zepagain, Pure Aloha Festival, Kim and Kourtney Kardashian, Cee Lo Green, Michael Phelps, Rehab, Gladys Knight, Ray Romano, Dana Carvey, Hal Sparks, Voises 3, Rio, Scream 4, The Conspirator, Of Gods and Men, Atlas Shrugged, The Last Lions and Siena Italian Authentic Trattoria.