So, I'm kind of proud of myself this week.  Sorry in advance for this.  It's been a particularly horrible three weeks.
First, one of our business units had a huge acquisition (for them) that my tiny group was in charge of, and a few days before closing a major environmental issue arose.  After two all-nighters, we closed the deal on August 1, only one day later than the ridiculous and unreasonable schedule our business guys expected.
After closing that in the morning, I thought I'd get a break, but then that afternoon learned that we were going to try to do a debt offering, originally targeted at $300 million (but rose to $1 billion) in 
one week.  Seriously no way to express how impossible that seems to be, also especially given that one day before pricing that deal we were announcing our earnings and filing our quarterly report, for which my group is also responsible.
Somehow my little team got it done (with two more all-nighters last week) and priced a $1 billion dollar debt deal on August 8 at 6-1/8%.  Unbelievable and awesome.
Now, I get to stuff that is completely public at this point, so I'm not pulling a Woz (sorry GB), but I have to be careful still.  Wednesday August 8 we priced a $1 billion deal to close on August 17.  On Monday, August 13, my boss learned that we had re-forecasted internally to an extent that it put our deal at peril because of 
this.  Basically, we could try to close but the right thing to do was tell our underwriters of the change in circumstance.  This is Monday afternoon.
By Wednesday we had gathered all facts and decided to pull the deal and relaunch based on new circumstances.  To be clear, this was way more likely than not going to kill the entire offering and potentially put the whole company--and about 40,000 employees--at risk.  But still it was the right thing to do and we did it.  In one day, we pulled a $1 billion offering and replaced it with a $750 million deal, which turned out to be at a much higher interest rate (7%).  I worked about 72 hours straight.  But we got it done, and the deal was launched.  It appears that no one--not our lawyers, not our underwriters (JPMorgan and others) have ever experienced something like this.  
Here's a not fun article about it discussing rarity, but the difference in ours was that no outside intervening force occurred, AND we managed to relaunch successfully.
All in all, the worst week I've ever had at a job.  We're now scheduled to close Tues/Wed, so I'd appreciate thoprawishes to hope it happens.  Pretty proud, in any case, that the company did what was right and also that my tiny, tiny team accomplished this (along with my boss).
ETA:  Also, I'm really good at ordering pizza!!!!!!11111oneoneone