Eternal Sunshine of the Spotless Mind Structure

I think the nonlinear structure of 'Eternal Sunshine of the Spotless Mind' was very interesting.  Joel was in his mind about 75% of the time of the film.  It added a lot to the story and theme, but for the most part it only added to the characters near the ending.  I liked the story the way it was told, a twist on the normal get-back-together structure.  'Eternal Sunshine' was very different from the other nonlinear films we watched, since the story was mostly told all in the mind of a single person.