A quick update here.
I got an Ecosphere for my birthday (a sealed glass sphere with a self contained environment inside) and decided I would like to take some pictures of it to send to my family. Because the thing is all glass filled with water, my normal "mount flash on the camera and blaze away" technique wasn't going to work.
So, I took a deep breath, put a diffuser on the SB-50 and set it up about 45 degrees off to one side, used some white paper to diffuse the on camer flash and...
It all seemed to work. The SB-50 did trigger automatically and, after I got over my surprise at how well it worked, I experimented with different angles on the remote lighting. I haven't gotten the pictures back yet but I will probably post one or two on this thread so you can tell me what I could have done better.