Well BTTF was 27 years ago. So he's pretty much evolved from that approach to writing music. Though I can hear elements from BTTF (heck even Predator and Judge Dredd) in some of his scores today from time to time. His action scores from the past few years (except The Mummy Returns and Van Helsing) follow his Tomb Raider:Cradle of Life approach to scoring. Which is a shame. I agree The Avengers should've been as "iconic" and "distinctive" as BTTF was then and still is today. I guess TPTB didn't want something "iconic" or "distinctive". I still believe they should've went with Giachinno instead. I'm sure he would've delivered the goods.