This evolved from the "4e art quality" thread. I noticed in my perusal of several 4e books that WotC cheaped out, and reused several pieces of artwork from earlier editions. As I only have 4e and 3.5 books. A few examples below:
Arcane Power
pg. 20: Grave Caller (Bard Paragon Path) = Suel Arcanamach (CArc)
pg. 90: God Fragment (Warlock PP) = Escalation Mage (FoE)
pg. 91: Hellbringer (Warlock PP) = Morthos the Warlock (CArc)
Divine Power
pg. 44: Anointed Champion (Cleric PP) = Anointed Knight (BoED) [Surprise!]
pg. 70: Adept of Whispers (Invoker PP) = Death Delver (HoH)
Martial Power
pg. 32: Ravager (Fighter PP) = Frenzied Berzerker (CW)
pg. 156: Martial Archetype (ED) = Kensai (CW)
Are there more from the other books, like the PHBs, DMG and Monster Manual? Can you find all the reused art, Playground?
EDIT: I'll try to update the first post with any more that people find.
EDIT 2: It seems that many people think I'm doing this as some kind of slam against 4th edition. I assure all of you that I'm not - my only goal here is a thought exercise. Thank you.