Looks like Amazon's having a bit of trouble. The site went down several minutes ago, but has since been cycling through a fun little mix of the various "we're down" banners. The above image is what you'll currently get, and this was the first:
Amazon's web services still claim to be mostly in working order, the only denoting any issues is the AWS managment console.
We've reached out to Amazon and will update with more information as it becomes available.
Update: Amazon is now back up; we'll update again when we figure out exactly what happened.