Finished season 3 over the weekend.
Couple of notes--all the pocket squares are folded the same way. I just thought that was interesting.
Also, Roger said in a really offhand way (I think only to Don/Dick) "we're going to need a lawyer" when they were forming CSDP. It was kind of dismissed. Considering Don didn't lawyer up for the divorce, the questionably legal way the new firm was started, and that Weiner always uses Chekov's Gun, I think season 4 will have some legal battle.