Yes, the lion does mean something.
There are several web sites where the
guys are posting their version of a
lion pic along with their posts.
stillproud2befree or Calpernia may
be able to tell you what this latest
lion icon craze is.
I believe one translation of Osama is "lion." I have seen him referred to as the lion of Islam before as well, maybe someone with more knowledge can back that up.