I stand corrected. He was indeed Jm J. Bullock on Too Close for Comfort and now goes by Jim J. Bullock. Turns out he went by Jm (or JM) because there was already a Jim Bullock in SAG.

Even though 646Guy didn't manage to provide me with this info, I feel compelled to mention that he was right and I was wrong.

I am still, however, cuter.