I don't think that many links on a page hurts your page. But after about 100 outgoing links Google ignores them so if you sincerely want to pass PR on to the pages you link to keep it under 100.
The same is true when you are linking to other pages on the same site. Less is better. So many links to other pages simply dilutes them. Plus who would even look at so many links so visitor wise it's worthless too.
Link to major sections of you site from the home page. On lesser pages link back to the homepage and to the other pages in that subsection. It's better for google and better for your visitors.