Good ol' Frank is crazy as a goat. But he sure could draw the hell out of a comic.
Anyway, when I think DC I usually think Garcia Lopez and DC Comics Presents. He is the cornerstone on which WB build the DC merchandising. From toys to sneakers. Lunchboxes and tshirts. But if we go favorite artists I can't go without naming Joe Kubert. The level of his craft puts him right up there with Will Eisner and Jack Kirby in the history of american comic book.
Of the artists currently working for DC I think Reis, Janin, Mankhe, Saiz, Sorrentino, Chiang are the names that come to mind. Amazing how Capullo has evolved in Batman. Pat Gleason I like a lot. And the Multiversity line up even if they are not exclusive. Chris Sprouse, Karl Story, Ben Oliver, Frank Quitely, Cameron Stewart... they are awesome on their own right. And finally, Kuder is killing it in Action.
PS: Soft spot for Jae Lee. When he's on he's ON.