I am in kind of a bind here. I shoot footage using the Pananson HD camera and the Sony PD-150 camera on the same tape. Nothing was shot in HD, but for some reason when I play the tape back the sound and video jump in and out and artifact. It's strange. Anyone know what I should do?

Your problem is most likely the common problem of footage not working between two different brands of cameras. For example if you record something on a Sony camera and try to play it back on a canon camera you are likely to experience audio and video noise (lines on the screen, choppy video and audio), however this does not always occur, but is known to happen. Have you tried playing back the part you recorded on the Sony on the Sony camera and vise versa for the other type of camera? If that doesn't work I'm not too sure what you could do unless you have access to a miniDV deck. Anyways a good rule of thumb is to record all footage on one brand of camera, it helps eliminate this problem.

yeah in theory it should work fine. In actuality, the Zenith on the tape heads could be different, there could be wet/dry tape lubrication issues, slight tape speed issues, and other slight differences. Like Bird said, play each segment of footage from it's respective camera. And in the future, I would keep separate (unused) tapes for each camera. On larger projects, it could create logging/archiving issues too.