[goodness]

You can use EC2 in somewhat similar ways to GAE. They have Elastic Map Reduce (which runs the MapReduce side of Hadoop) and SimpleDB/S3 for storage. SimpleDB is even one of the backends that Django nonrel supports. The only real instance you have to manage is the web/app server. Amazon also offers a level of free service:

http://aws.amazon.com/free/

So I'd say they are at least somewhat comparable.

[th0ma5]

It is important to note that this feature started today, and is only available to new customers.