Fonts In Use is a brand new website from Nick Sherman, Stephen Coles and Sam Berlow, with Indra Kupferschmid and Marc Oxborrow contributing. It profiles typefaces used all across the graphic design world, and goes into depth on how well the typefaces were used, where you could find the typefaces if you wanted to use them yourself, and, if the typefaces were badly chosen, where you could find suitable alternates. Think of it as a long-form Type Tide (which Stephen also maintains, though I expect to be replaced with this new website and has told me that he still intends to update, though not as often). Overall, this is a website you definitely want to keep after!

Edits: Added links to contributors, updated status of Type Tide.