Does mapserver come with maps?

[David H. McCoy]

Hello, 
   I'm new to Mapserver so please excuse the nature of this question. I'm 
working for a company that currently uses Google maps in its application. 
However, we want to replace google maps with with openlayers and 
mapserver, ultimately allowing the user to swap between the two.

Does mapserver come with maps that are comparable to Google maps? If not, 
is there a open source or freeware source for maps? If not, where would one 
get maps?

Thanks for your time.

David H. McCoy