I did the Advanced Certification and I found it well worth the effort. I can't say that it helped me find a job, but it did give me a pretty comprehensive understanding of the capabilities of the language - enabling me to write slicker, more efficient code in response to problems of increased complexity. In short - it made me a better, more rounded SAS programmer. I would look favourably on job applicants who are certified. After all - "Number of years using SAS" does NOT equal a high level of proficiency with SAS!!
whilst it is true that the syllabus is broad and you may not use most of the features in your every day job (eg importing flat files), just knowing the functionality exists can get you out of the sh*t on the day that it does become necessary!