Hussar
Legend
Funnily enough, I got a hold of my Basic/Expert books again at the same time as 4e came out. I see all sorts of similarities. Conceptually the idea that the heroes are just that, heroes is very much Basic/Expert. Plus, the focus of the game is very similar. Basic/Expert focused very, very strongly on the adventure, not the setting. I never played beyond Expert, so, I don't know about that, but, looking at how strongly gamist (not that that term strictly applies) B/E D&D is, I can't help but see a lot of parallels.