I have been called many things over the years (gotta love junior high!), but Jim or Jimscott or JimHyphenScott are my main nicknames. My real name is Scott and as a kid I hated that name.
So, upon anticipation of going away to college, I chose and adopted the name of Jim. What I didn't count on was a buddy of mine since 7th grade also choosing the same college. So I introduced myself as Jim and she introduced me as Scott. When the circle of friends coincided, the confused 18 year olds resolved matters by combining the two names - hence, the forum name.
My wife occasionally refers to me as Jimothy.