"That's right — I just used the G-word,” says artist Neil Keller, arching an eyebrow while awaiting my reaction. As I take in his work, I know he’s talking about Antoni Gaudi, the architect best known for La Sagrada Familia, inBarcelona, Spain, the church topped with as much ornamentation as a birthday cake iced by an exuberant child. Not that Gaudi’s or Keller’s efforts seem childish. Rather, both creators evolved past the restraints often associated with adulthood, freeing them to produce anything within their junglelike imaginations.