As I looked at this, I found, to my surprise, that I've only written about Lex in one story, The Portrait. In that one, the police broke into Lois's apartment and hit him with a barrage of bullets just as he was blasting Clark and Lois with double ought buckshot from a short barrelled shotgun.
Heavens, I'll have to do something about my neglect of him. He's too delicious a villain to ignore and so much fun to write.
Jude