I have five of six chapters of my thesis done. It feels great to be able to finally apply for PhD positions. Choosing a future supervisor, I'll do a lot more checks to ensure my continued sanity. LaTeX & knitr saved the day with regards to document and layout management.
On to the conclusion chapter, then 3 weeks with a language editor, and hand in is so near I can taste it.
As in Joshua Blaine's original description (below), but may be used to brag about things you've accomplished either this month (January) or the previous one (December), assuming that you haven't brought it up in any earlier Monthly Bragging Thread.