4e Classic (4eC) sings with the right group, but requires a high degree of player buy-in to get the results that I want out of it. I tend to view 4eC as a visceral game about violently capable individuals who set out willingly or not to irrevocably enact change in their worlds who end up becoming mythic figures in their own right. This is highly reinforced in the assumed setting of the game with the backdrop of the Dawn War, tales of the fall of civilizations, and highly active Gods, Demon Princes, Primordials, etc. 4eC presents a world on fire in desperate need of heroes. Thematically it strikes the same currents that Greek Myth, the Diablo games, and Exalted does though tied to a more mortal perspective.
Of course to really embrace these aspects players need to be able to shift between awareness of the game's narrative to engaging its combat encounter mini-game while remaining focused on the underlying fiction. 4eC asks a lot out of the players, but I find the relatively unique combination of satisfying my narrative jones while engaging my tactical/strategic mind incredibly refreshing.