With each passing year, the Fleetwood Mac discography seems to grow in prestige. At this point, the famously tempestuous band's killer catalog — from the mighty Rumours to the sprawling Tusk — is like the lingua franca of the pop-music universe. Everyone knows and loves these songs. That fact was demonstrated anew on Tuesday night at L.A.'s Fonda Theatre, where musicians, actors and other luminaries gathered for Fleetwood Mac Fest — benefiting musician-aid organizations Sweet Relief and the Sweet Stuff — the latest all-star event from the Best Fest team. Our photographer was there to capture all the action, both onstage and off.