I agree with flushing the brake fluid. I have flushed some where the fluid looked like chocolate milk. Replace Fuel filter, and PCV too. Don't flush trans, just drain, replace filter and new fluid. Shocks yes, plugs yes, If distrubitor, cap and rotor, plug wires.
If you do regular oil changes the inside of the engine should be pretty clean, but if there is alot of buildup you may want to run a can of the gunk motor flush before changing the oil.