Dragons of Weng T'sen (D&D/Role Aids)

The adventure starts by railroading the PCs into the adventure and I think a good GM can, and should, alter this. The encounters are fairly sparsely populated but the PCs shouldn't necessarily resort to combat; allies will be useful when battling powerful elementals.

There are, however, a lot of good ideas and a premise adaptable to a variety of settings and not limited to Oriental Adventures. In fact, the elemental theme makes it a good module to adapt to the Dark Sun or Dragon Kings settings.