Hal (Jack Black, right) has a life-altering encounter with self-help guru Tony Robbins.

Hal (Jack Black) cannot understand why the undergarment of his lithe girlfriend is the size of a small tent.

Jack Black, Bobby Farrelly, and Peter Farrelly in Shallow Hal (2001)

Gwyneth Paltrow and Jack Black in Shallow Hal (2001)

Gwyneth Paltrow and Sayed Badreya in Shallow Hal (2001)

Jim Carrey, Cameron Diaz, Gwyneth Paltrow, and Jack Black in There's Something About Mary (1998)

Jim Carrey, Gwyneth Paltrow, and Jack Black in Me, Myself & Irene (2000)

Matt Damon, Gwyneth Paltrow, Greg Kinnear, and Jack Black in Shallow Hal (2001)

Mauricio (Jason Alexander) is a little overwhelmed by his ukulele-strumming acquaintance (Joshua "Li'iboy" Shintani).

Hal (Jack Black, right) reacts to some questionable advice from his equally shallow friend Mauricio (Jason Alexander).

GWYNETH PALTROW is Rosemary, a Peace Corps vounteer whose inner beauty is seen as physical splendor by her new -  and hypnotized - boyfriend.

Rosemary (Gwyneth Paltrow) and Hal (Jack Black) share a tender moment over an enormous chocolate shake.

JACK BLACK is Hal, the ultimate shallow guy whose views are changed forever after an impromptu hypnosis.

Being in love is an uplifting experience for Hal (Jack Black), after he is hypnotized into perceiving the inner beauty of Rosemary (Gwyneth Paltrow) as physical nirvana.

An anxious Rosemary (Gwyneth Paltrow) prepares for a romantic evening with her new boyfriend.

Gwyneth Paltrow, Jason Alexander, Jack Black, and Susan Ward in Shallow Hal (2001)