Captains Quarters has a good thread going on pork. But his attack on bike paths is misplaced.
Let me sidestep the issue of whether Federal transportation dollars should pay for anything off the Interstate or (National Highway System), but as long as they are - then we should consider them infrastructure. We have been conditioned to giving one personal transportation mode, the automobile, preference. Everything else is recreation. In the course of doing that we have limited our personal transportation choices and impoverished ourselves.
Think about this: If your child asks to go to the library, or school, or the park what would you say? Would your answer be different if she asked to ride her bike or walk?