Todd Klein is one of the best comic book letterers in the field. It's a profession that has largely transitioned from working with pen and ink on the artwork to working in Adobe Illustrator on a computer. Recently, Todd did a stunning amount of research to chart the evolution of that change for a seven-part series on his blog. Wanna read it? Start with Part One, then read Part Two, Part Three, Part Four, Part Five, Part Six and Part Seven.
The one omission that struck me in Todd's otherwise exhaustive piece was Stan Sakai, who still letters Groo the Wanderer and his own Usagi Yojimbo the old-fashioned way, right on the art boards. Sergio Aragonés, who of course draws Groo, is well aware of the advantages of computer lettering. It makes it much simpler to translate the work for overseas publication, for instance. Still, there is something comforting about having the lettering right there on the pages he's drawing.