I've run into a rash of tar.gz files on the internet today that are not actually gzipped. People seem to be just tarring things and then renaming them tar.gz! This of course makes it difficult to ...

OK, I've got about 30 .tar.gz files that I'd like to decompress into a directory. What's a good way to decompress all these files without doing 'tar xzvf file1.tar.gz && tar xzvf file2.tar.gz' etc.? I ...