are you not doing TDD yet? start with DDT...
Test automation is not a controversial topic in most circles. Even developers who don't write automated tests agree it's a great idea. They just don't have time to work on it very often.
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DDT is a fairly simple concept. When you find a bug, add a test.
Why take this approach?
First, no one can dispute the need for the test. If an issue was found, then it had been missed earlier. Perhaps the developer missed it and QA spotted it. Maybe it slipped past everyone and it was reported by your customer. Whenever it's reported, it needs to be fixed in a way that will prevent it from reappearing.
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DDT is a gradual approach.
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Over time you'll find that DDT creates an extremely effective test suite that targets the most problematic parts of your code base. Run your defect driven tests inside of a continuous integration system and you'll find your code running more cleanly every day.
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