First let me say that you usually need a license to us a font (or even have it on your computer). There are a selection of free fonts you can download from dafont.com with the option to 'donate to author'. It is always a good idea to honour the creator. Most fonts need to be purchased with a licence (per user/computer usually). There are lots of places where this is possible such as www.my font.com and www.fontshop.com.
You can check out Bliss and the history behind it from the creators website Jeremy Tankard. I have recommended the font for a couple of my clients. I love the curves, how one letter glides to the next moving your eye gracefully along the line.