Thanks to everyone who replied (Bill Huber, Lionel Davoust, Lorenzo
Jorquera, Tara Montgomery, Scott Webb, and anyone I am forgetting).  Every
volunteered script for me to use. Here is the original question:

Hello, I was wondering if there is a way to add a shapefile to numerous
views without going into all the views individually. I have ~60+ views I
want it added to, but can't find a good way to do it without opening each
(which takes forever!).

Script (Huber):
------------------
Add the shapefile(s) to one view as a theme.  Edit its (their) properties
and legend(s).  Activate it (or them).  Then run this script:

'
' Add copies of all active themes to all views.
'
theView = av.GetActiveDoc
lThemes = theView.GetActiveThemes
for each v in av.GetProject.GetDocs
   if (v.Is(View).Not) then continue end
   if (v = theView) then continue end
   for each t in lThemes
     v.AddTheme(t.Clone)
   end
end
' end of script

If you don't want to add the shapefile to every view, you have to work a
little harder: somehow you have to identify which views are the desired
ones.  There are many, many ways to do that (such as: pick from a list, use
only the open ones, use only those with a common GUI, use object tags, use
a view naming convention, ask a yes/no question for each view, predefine
them within a list in the script, create a table of the desired views,
etc., etc.); pick your favorite and hack the script.

(Davoust)
------------
A bit of Avenue coding should do the trick. For example, you can make the
theme out of the shapefile:
the_theme = Theme.Make("c:/yourtheme.shp")

Then add it to each view:
the_views = av.GetProject.GetDocs.FindByClass(View)
for each elt in the_views
        elt.AddTheme(the_theme)
end

(Jorquera)
-------------
You can use an avenue script like this:

 aTheme = Theme.Make(src.AsSrcName)
 FOR EACH aDoc IN av.GetProject.GetDocs
  IF (aDoc.Is(View) ) THEN
   aDoc.AddTheme(aTheme)
  END
 END

where src must be path to the source of your theme (the shapefile).
If you want the new theme to be visible and active yo should add these
lines:
 aTheme.SetVisible(TRUE)
 aTheme.SetActive(TRUE)

----------------------------------
There were many others, but I got what I needed. Thanks again!
Christie Kearney