I'd say his only really unimpeachable works are The Flash, JSA and Stars and Stripes.

" As a result of the grim and gritty ’90s, former Green Lantern Hal Jordan was serving as The Spectre, a.k.a. the spirit of God’s vengeance, paying penance for his universe-shattering actions as Parallax in Zero Hour."

Maybe we'll get the other Hal Jordan - bitchass Air Wave

If you've ever wanted to know what it was like to live in a Geoff Johns comic..

After Ras Al Ghul and this I kinda just want to see someone do a Yellow Peril villain straight up

"It also features a girl who’s so half-jokingly afraid the guys there are
serial killers that she asks Glitch if that’s what’s in store."