Thumbsucker (2005)

Justin is a seventeen-year-old with an addiction: thumbsucking. The stigma attached to his brand of habitual behaviour cripples him emotionally; his desire to break away from it so he can become a regular member of society (and hopefully get laid) throws his life into chaos.
The début feature from director Mike Mills is an indie film through and through, albeit one that attracted the attentions of a top cast. I think Tilda Swinton the finest actress alive today; add in Vincent D'Onofrio, Vince Vaughn, Keanu Reeves and then newcomer Lou Taylor Pucci and you have a quiet film filled with hidden depth and people to care about.

3½ debilitating problems out of 5