Behind the fun fun fun of The Beach Boys was the fascinating and genius singer/songwriter Brian Wilson, whose success came at an extraordinary personal cost. “Love & Mercy” presents an unconventional portrait of the iconic Wilson — portrayed by two actors, Paul Dano in the ’60s, at the peak of The Beach Boys’ fame, and John Cusack in the ’80s, as Brian reclaims his life after a mental breakdown — and examines his musical brilliance, personal voyage and ultimate salvation. Vitals: Director: Bill Pohlad. Stars: Paul Dano, Paul Giamatti, Elizabeth Banks, John Cusack, Kenny Wormald, Joanna Going, Jake Abel, Dee Wallace. 2015, CC, MPAA rating: PG-13, 122 min., Drama, Box office gross: $11.790 million, Roadside Attractions/Lionsgate. Extras: “A California Story: Creating the Look of Love & Mercy” featurette, “A-Side/B-Side: Portraying the Life of Brian Wilson” featurette, deleted scenes, audio commentary with director-producer Bill Pohlad and executive producer/co-writer Oren Moverman.