Last night Beck did in L.A. what he loves to do in L.A., hitting the Echo (or, Echoplex) for a "secret show" and work through some rarities -- in this case, stuff from the out-any-day-now Modern Guilt. According to LA Weekly (via TDS), it was a "not-quite-packed" affair which featured some reworkings, like a My Bloody Valentine-y (yes, they are ...