[dizz]

Amazon EC2 - http://s3.amazonaws.com/ec2-downloads/ec2.wsdl S3 - http://s3.amazonaws.com/doc/2006-03-01/AmazonS3.wsdl

And I'm sure there's others... in fact here's a dude that's listed all the amazon services exposed as wsdl http://www.ecocoma.com/amazon_wsdl.aspx