Harold in his bedroom. So stream line, so modern and so simple. It does a great job of extending his character as an IRS agent obsessed with numbers into his living space, deepening his personality.
You can see a few more example of his home in this collage. I have to say I'm really drawn to the extreme modern, but not flashy, interior of his apartment.
And his hippie, tax evading girlfriend Ana. Her home is a collection of mismatch thrift store finds. Lots of bright colors and eclectic patterns. It speaks volumes about the kind of person Ana is.
And the awesome set design didn't stop with the main characters. Harold stays temporarily with his co worker Dave, who is similar to Harold but has more of a playful side to him than Harold does (at first anyway). His apartment shows that. Its also modern and clean, but its more funky and space agey. Its just genius.
Of course characters in a movie can be a bit more one dimensional. It might not be that easy to channel your personality into your interior design, but it does beg the question: What does your interior say about you? :)