Another reason to form real, not superficial relationships with your professors: they know their field well. So who cares? Well, maybe you should.
Let’s say you’re looking for a psychology research project and are having trouble finding one. The person who’s clued in the most to your school’s research is your Psych professor. The person who wants to make this research productive, and who wants to help students? Also your professor.
Speak up, and reap the rewards.