A couple of things I have been thinking about:
2. I think I brought this up during the FX series thread, but I remember a video of O.J. physically picking up his son right before Sydney's recital the day of the murders. He struggled, and he ended up placing his son back on the ground before hugging him or kissing him, or doing whatever he had intended to do. That 46 year old man was nowhere close to being in the type of physical condition needed to overpower Ron Goldman by himself. Ron supposedly had some knowledge of self defense and definitely had defensive wounds on his hands. I believe Ron was killed after Nicole. She looked to be 130 pounds soaking wet, so killing her might not have been a problem, but unless OJ was on some type of pain numbing LSD, in addition to the coke he was on, I just can't see him killing both her and Ron by himself, especially since he had no other injuries except a cut to his finger. That leads to the discussion about Jason being a suspect, or other killers.
3.One theory I have been thinking about is that after Nicole finally decided she wanted to leave OJ for good, she started getting more into the drug use, and the dating scene. With OJ thinking he still owned her, it embarrassed him. Some of his "friends" probably started reporting back to him that "his woman" was out and about and he couldn't have her out there "whoring around". It had to stop. OJ was a smart man as far as fitting in and being fake with all levels of people, but he was dumb as rocks pertaining to everything else. I think OJ put a hit on Nicole since he finally realized he could no longer control her and probably stopped by to make sure everything was going as planned. In his mind the Chicago trip was a perfect alibi, but he was too stupid to get his times straight. One other thing that has me questioning whether or not he physically killed them, is when he actually saw Nicole having sex with one of her boyfriends, he took her into the room yelled at her, and after she calmed him down, he came back out and acted like nothing had happened, shook the guys hand, told him no hard feelings and left.. I don't think he was about that life, as far as physical confrontation with guys.