http://www.youtube.com/watch?v=EDib2vl9fVU
I know someone asked about ranger builds a while back so I am providing this link to Koroshi's youtube ranger build video. I love Koroshi's builds and also run a variant of his engineer build.
My ranger build is very similar to this and I found it is extremely hard to bring down. Since I rarely roam, I swap out axe for shortbow, and also use entangle for my ultra instead of rampage as one.