[wglass]

My colleagues and I in the SF Bay and Sacramento are using Comcast are unable to access AWS hosted sites.

AWS says:

External Network Connectivity

We are receiving reports of connectivity issues to the AWS network from customers on specific networks in California. Our initial investigations point to an issue with an external network provider outside of the AWS network. Connectivity to instances and services within the Regions and from other networks are not impacted at this time. All AWS Services are operating normally at this time.