two places that come to mind in Canberra are Parvaiz Cafe in the Minter Ellison Building, which is on National Circuit, opposite Rydges. They have fresh roasted coffee and they guys there are easy going and make bloody good coffee. The best I have tasted in Canberra. The other is Kingston Grind who make awesome coffee too. They are in Kingston, but on weekends are pretty flat out, but worth the wait. Make sure you order to coffees in advanced so you dont have to wait long time for the second one.
But Parvaiz Cafe are quick, but dont open on weekends which is a shame as there breaky menu is bloody awesome and cheap. Oh well.