Update: February 26, 2019: After nine years of the digital-only edition, the Big Book of Font Combinations is available in glorious, full-sized print editions: paperback and hardcover. Learn more!
Update: April 5, 2016: I recently compiled a list of the 19 most popular fonts according to usage by graphic designers from all over the web. I could have had 100, but I got it down to under 50, and from there whittled it down to just the 19 best fonts. Why 19? Because at exactly 20, the “long tail” shot right out and the differences in tallies became negligible. Take a look at those top fonts if you want and come right back because now we are going to have a little typography fun.