By far, some of the best examples of modern mid century style can be be seen in the I Love You, Man sets.The film's main house (shared by on-screen couple Rashida Jones and Paul Rudd) is almost too perfect, but it gets a pass due to Jones' character portraying an interior designer.
Here's a little taste of how to achieve the look in real life...
I loved this film, not only for the incredible story (and Colin Firth), but also for the gorgeous set and costume design. I just found out that some of the production design team from Mad Men actually worked on A Single Man, which explains a lot of the awesomeness in the 1960s decor.