i just did my timing belt job a few months ago.

here's what i replaced:

(the bolded items are at the least what you should replace while you're in there)
- timing belt
- water pump
- tensioner spring
- a/c, p/s, alternator belts
- left-front engine mount
- camshaft cap
- valve cover seals (valve adjustment as well won't hurt)
- spark plugs
- plug wireset
- pcv valve

a few weeks later i finished that job up by replacing the rotor/distributor cap and fuel filter.