The only Halo I ever played was/is Halo 3. The story isn't really anything to write home about, but the fact that I'm still playing both the campaign and regular multiplayer with my friends, as well as the fact that I can recite some of the dialogue from the campaign from memory do speak for something. I assume Halo: Reach is gonna be a blast, a worthy 'swan song' to the Halo series, as the developers put it.