'The Sparks Brothers' Raises the Question: Are We Allowed Not to Like Sparks? (Column) Owen Gleiberman, provided by FacebookTwitterEmail If you watch “The Sparks Brothers,” Edgar Wright’s ultimate cult rock documentary about the Greatest Band That Almost No One Has Heard Of, you may find yourself developing a distinct affection for Sparks, the cult duo in question, and liking almost everything about them except, perhaps, for one small insignificant thing. You’ll like the fact that Sparks — who released their first record in 1971 — have put out 25 albums, consisting of some 345 songs, and that they did it all while remaining more or less under the radar. You’ll like the way that they started off with a glam-rock vibe, then had a computer-rock moment (their 1979 droid synthesizer album “No. 1 in Heaven,” produced by Giorgio Moroder, is like the “TRON” of pop), then went through a disco electronica phase, then an ’80s indie-rock phase, then many other phases.