The only things that it usually passes as good are for-purpose random number generators' or ciphers' outputs. Everything else (including a terabyte of RC4 output, executables, zip archives, jpegs, mpegs, mp3s, ...) that I've pointed it at, fails one or more of the tests.
Have you tried removing the headers and trailing data?
True random-looking-ness is hard to find... :-)
Since when? There are plenty of easy ways to generate it. Many compressed files will also pass your randomness tests if you test only the compressed data itself, not the whole files.
Ruptor
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