Hey fellow WriMo, I'm right with ya! Nanowrimo has changed November from one of my least liked months to one of my favorites!
I'm further behind than you but planning a big catch up night tonight. It's seemed to go like that for me - can't manage the 1667 a night, but CAN do surges of 4000 or 5000 in a sit down when inspired.
I tried it last year, but got discouraged when my obviously not well formed plot began to wander hopelessly. This year I did the research work, characterizations and detailed plot outline before Nov 1st, and now I'm sure I'm going to complete a draft novel by Nov 30th!
That's what I love about NaNo - it gives us that concrete deadline, and proof aplenty that one CAN write a novel draft in one month, night by night! God bless the founders of this phenom!
Best of luck with yours - I know there are a few other WriMo's on here, we'll have to check in Dec 1st (or next OT day!) on our results!