Call it ironic that the Aphex Twin's first U.S. album release was under a pseudonym, but given the many names Mr. James has used over the course of his career, perhaps it's just as well. Regardless of name or intent, on Surfing on Sine Waves he serves up a great collection of abstract electronic/dance madness, caught somewhere between the driftiness of his more ambient works at the time and the rave-minded nuttiness of "Digeridoo." The opening track, "Polygon Window," plants its feet firmly in both camps, with a brisk series of beats playing against the slightly dark, slightly quirky keyboard sounds with which the Twin first made his name…