Bonobos.com is a pretty awesome male apparel company, but they had a huge Cyber Monday failure. Their site has been down for 4 days or so, a disaster anytime, and they lost a ton of sales. Their head of UX explains what happened and why. Very interesting if you care anything about online retail, site stability, or cool, good fitting pants.
Also, BustedTees had zero downtime on Cyber Monday. Therefore, we can only assume we are a better company.