Think that netflix is down too. so much for chaos monkey?
However, I have 20 instances on us-east. And haven't seen any problems, even during yesterday's outage on AWS.
Edit: that doesn't mean this isn't an AWS outage.... It almost certainly is.
I think Netflix are expecting another cloud to offer the same model and API as Amazon though, which isn't likely to happen - everyone else is learning from AWS's mistakes!
Even if it did, many of the features they're waiting for (like auto-scaling groups) probably wouldn't be as useful in a multi-cloud environment, and would therefore have to be built into Asgard.
Rackspace (and many, many other co's) tend to have functional UPS units & generators. Amazon tends to choose the cheapest datacenter facility imaginable and then these sort of failures occur.
Given their size they'll inevitably fix the power issues though -- they've got the finances & they're capable to add a few levels of redundancy.
Looks like Amazon wasn't the only one with inadequate testing of their continuity plan. And I don't think Rackspace offered alternate Availability Zones at that point.