Like Menexenus, I too find myself having difficulty coming up with interesting 1st through 3rd level adventures. For me it much easier to create as the levels increase, though epic is something I have never tangled with before (and I am not sure if I want to).
I also have to agree with arnwyn, unless you are into either Monte's Banewarrens or Necromancers undead modules like the Bonegarden, the pickings are slim.