What is the best credit card to apply for as a young student?

I am 20 year old college student with relatively no credit. I am interested in opening up just ONE credit card so I can slowly build some credit with one or two purchases a month. I am looking for a card where I can get some type of rewards, benefits, etc. Also one that I will not get killed in with interest. My bank is PNC, and I don't know what they would recommend but I would rather get the internets opinion! :-)