Celtavian said:Anything they are capable of doing as long as they miss their save. You can even make them commit suicide if they miss their saving throw. (hehe..self coup de gras)
Enjoy!!
They do get more than one save for some types of actions though per the spell text.
Celtavian said:What? You can't have them commit suicide? What about Dominate Monster? Is there a limit to what you can have them do with dominate monster? I can't believe you can't force them to slay themselves. The classic evil magical dominator can't make a person kill themselves. I hope Dominate Monster is a better.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.