There's plenty of other good videos on field sobriety tests on YouTube, Google Video, and some other websites.
In my experience, police officers never do these correctly. They rarely understand the concept of nystagmus, for example, and how to apply it in the test of "maximum deviation" versus "angle of onset." They often misunderstand how to score the FSTs as well. And you tend to see a variety of other mistakes.
Disclaimer: SpinJ's Traffic Court directory is privately owned. We are not a lawyer referral service, and no attorney-client or confidential relationship is formed. The attorney listings are paid advertisements and are not a referral or endorsement by SpinJ Corp. or the courts. We do attempt to find lawyers who are skilled, experienced and respected in criminal defense, DWI defense, and traffic defense, but we can't be perfect in that and you should make your own efforts to verify the quality of any traffic court or criminal defense attorney.