“Supersonic” (***1/2 out of four) was an impressive, supercool documentary of British rock band Oasis who took the rock ‘n’ roll world by storm in the early-to-mid 90’s due to the brilliant and volatile chemistry between two brothers who could not have been more unlike. Bizarrely, the film begins and ends with their monstrous show at Knebworth in 1996 and does not feature anything afterwards. Still, this is a feast for hard-core fans (like myself) with tons of behind-the-scenes interviews, early demos, scenes of drug use and mad drinking, and early shows on their rise to the top.