What computer Role Playing Games have the best Artificial Intelligence and Artificial Wisdom?

I would like to play a role playing game where a computer plays on my team and can think for its self and not have to be constantly overridden by the player. I would even like to play a game in where the AI can take turns at being team leader without getting everyone killed. I liked Star Trek Bridge Commander where you can let the tactical officer take over the battle and you can do other things or watch and override when necessary. Can you suggest any other games that have good AI teammates or AI team leaders with actual leadership skills?