Terasi/trassi - with fermermented shrimp paste, but you can use "normal" shrimp paste
Kacang/katjang - with peanuts
Ulek/oelek - raw, plain chili's and salt, although I have seen recipes with vinegar.
Even though it's raw, it lasts very long and is the base of most other sambals
Bajak/badjak - fried, very nice, don't know all ingredients off hand
Also sambal tomat, sambal peteh, sambal brandal, sambal tjabe rawit
Nice site is by a lady who is using an old Indonesian cookbook (in Dutch) as a base. Site is in Dutch and English
+400 Indonesische Recepten