Get to know professors so you can get recommendation letters for grad school. I was shy and didn't meet any, and now I'm locked out of grad school for it. (They all require recommendation letters)
It's funny how highschool makes people forget that professors are people too - and then you go out for food and drinks with your CS professors in college :P
Absolutely. Get to know them and not just for recommendations. Let them know that you're genuinely interested in the field and they may be able to hook you up with a good undergrad research project (and publishable paper) and a little grant money. They can help you figure out grad school plans, if you want, and can either help you get funded to stay there or refer you to other universities where they know people.
