Before writing titles such as Nightwing, The Green Lantern Corps and The Outsiders, he edited some of my favorite titles. It's not every day an editor can make you take notice of his name.
He can when he's the editor who shepherds writer Geoff Johns onto JSA, pulls a pre-Identity Crisis Rags Morales onto Hawkman along with the previously mentioned author, cementing the JSA and its' related titles into the franchise it's become today.
He did it again with the Will Pfeifer-penned H-E-R-O, an adult take on the Silver Age "Dial "H" For Hero" concept producing one of my all-time favorite single issues, H-E-R-O #11, the story of the DC Universe's first "superhero."
Along the way he helped restore, along with Geoff Johns, Hal Jordan and The Green Lantern Corps to glory and beyond, giving it the momentum needed to become what it is today: the engine that is DC's "event" title, Blackest Night.
While JSA and Green Lantern are the titles that most would point out as the most important of his stint as a DC Comics editor, in my mind, his most lasting legacy is his choice to install writer Will Pfeifer and artist future Green Lantern Corps cohort Patrick Gleason as the creative team on Aquaman, as they produced a six-issue run on how Aquaman and more importantly, comics should be done.
To me, what stood out the most about Tomasi's editorial stint was this: you could tell he was helping create books that he'd want to read. This intelligence and consideration shown on every page just as it does today in his own comics writing.