All of this should make for a great, compelling movie. Yet it doesn't.
I Saw the Light boasts an amazing performance from Tom Hiddleston, who does his own, quite credible, singing, yet the film itself never manages to soar. Instead, it bumps along in a series of vignettes about increasingly-unlikable people. Audrey, his first wife, is played by Elizabeth Olsen as a spotlight-seeking shrew. Lillie, his mother, is played by the enormously-talented actress Cherry Jones, who never gets to to much beyond be overly protective of her boy.
The film focuses on the last six years of Williams' life, a time in which Williams was prolific, yet spinning madly out of control. His dream is to appear on the Grand Ole Opry ("the show that made country music famous"), yet he lacks the discipline to stay there, preferring to tomcat around and drink until the editing of this film could possibly make sense. I know that's harsh, but the structure of this film keeps any sort of tension or interest from building - scenes start and end without any rhyme or reason and new scenes begin without context. It's as if you're experiencing an alcoholic blackout - things happen and then something else happens, and you're pretty sure something happened in the middle, but damned if you can figure out what it was and no one's telling you.
Hiddleston is truly amazing, but he just can't save this. Rent it if you want to, but there's no shame in passing this one by.
In the meantime, listen to Hank. He's worth it.