I recently made a dual double hand crossbow user based on El Mariachi, it's still fresh and I would appreciate any feedback^^.

Further I have a few builds abusing Bloodstorm Blade to make ranged uberchargers:
Hammerdin of Moradin - a hammer throwing Dwarf
ShurikeNado - Shuriken ubercharger
(see signature for the links)

Other than that I also have a ranged Arcane Channeling build: Shivering Tornado of Death