Don't worry - the "evil empire" aspect of Accenture's reputation is largely due to it being a large successful organisation with (as many large successful organisations tend to have) a very defined culture.
Yes - they do tend to break you down a little in order to build you up in their preferred mold, but that's about the extent of it.
Because Accenture do a lot of very large system integration projects, rather than pure advisory consultancy, they do tend to spread their tentacles widely within client orgs. This adds to the idea that they are dominating.
It remains a very good name to have on your CV - particulalry if you stay just long enough to get the benefits without being chewed up.