Catwoman (1993-)#18, I see it and still say wow after all these years. What is your favorite?
JSA Classified #1 variant cover by Adam Hughes.
Power Girl #1 by Adam Hughes.
I was always was fascinated by Detective Comics #647-649. The poses, the style, the lighting! Just had this retro noir vibe that was palpable and moving. Even when I was a young child I could appreciate the art.
Most anything from Gotham City Sirens. Never read Catwoman, but looks like it was probably the same artist.
The Rifleman #10, Superman Earth One (vol 3)
The Harley Quinn variant for Heroes in Crisis #1.