ive noticed our crawl DB is crawling 65000 files, i was wondering how i can get a break down of these files by content type?
Depending on your SharePoint version Search may be able to give you that.
If you're using 2010 with FAST or 2013 then refiners are accurate so you can:
Setup a Search page with refiner on the property you want counts for (with counts enabled)
Do a search which returns everything you're interested in can be:
"IsDocument:1" for documents