I'm currently working my way through Season 2, and by working I mean enjoying thoroughly.

One my favourite scenes to date has to be a Draper family picnic in what looks like a park. As the family is about to leave, Don Draper crumples his beer can and casually lobs it away. This set me on edge somewhat, but was followed up by Betty Draper "cleaning up" by shaking all the rubbish generated by the picnic off their blanket onto the grass, then everyone walking away. The shot lingered on the debris that remained in the otherwise pristine parkland, and had me both amazed and amused.