What’s your favorite typeface/font?

There is no Design forum yet and a lot of Apple fans appreciate good design, therefore I’m posting this here.

What is your favorite font?

  1. If you can, post a picture of the font in use and a link to try/buy it.
  2. You can have several different favorite fonts if they don't have the same purpose. (e.g. Display / Paragraph).
  3. It would also be great if you could explain why you like it so much.
  4. I hope to discover some new ones. Helvetica is a good font, but also very popular. So if it really is your favorite font, please bring something new and teach us something about it :-)