Some neat ideas F5 and wolfen... Maybe I could elaborate some on those concepts. Oh, and the Alchemist could be called a Thaumaturgist for flavor, to sound a little different...
A Necraturgist class, or an appropriate set of feats/skills.... A Dr. Frankenstein sort, who animates the dead through science, alchemy, and mysterious necromancy that is tapped into automatically as they work on the corpses... The Necraturgist applies special herbs, chemicals, preservatives, salves, mechanisms, and electricity...and as he works, some innate magical talent within him/her channels necromantic power into the creation, supplementing the pseudo-technology and giving life. Obviously, much more limited than a necromancer specialist wizard or an evil cleric, but neat and more mundane.
A Chirurgeon class, prestige class, or skill/feat set, who uses innate magic to supplement surgical, first aid, and herbal remedies. Similar to the Necraturgist, but in a more positive light, and maybe not using mechanical/electrical stuff in the process, just herbs and salves and surgical implements.
A Magesmith class, prestige class, or skill/feat set, who possesses some innate or cultivated magical spark that empowers his/her lovingly-crafted products. The more levels/feats/ranks gained, the more power and more exotic abilities newly-crafted items gain.
A Soothsayer/Gypsie (sp?) class or skill/feat set, with strange and spontaneous, magical talents of divination and fortune that function of their own accord, randomly activating with little to no conscious control.
A Metaphysic class or skill/feat set, which gains extraordinary and supernatural physical abilities through meditation, martial arts, intense physical exercise regimens, and pushing the limits of the human physique/will.
A prestige class or set of feats that allow a character to use subtle magic through their voice, to enchant or influence folks through song or oratory.