who owns each of these studios?
castle rock
mca
miramax
orion
20th century fox
universal
warner bros.

Hello--

I have the answers to your questions.

1. Castle Rock. Castle Rock is owned by Warner Brothers, which is
owned by AOL Time Warner.

You can read about Castle Rock Entertainment on its web site. The link
is http://castle-rock.warnerbros.com/

You can read about the history of Castle Rock Entertainment on its web
site, as well. The link is
http://castle-rock.warnerbros.com/cmp/html/aboutcre.htm

2. MCA. MCA is owned by Vivendi UNIVERSAL Entertainment. MCA was
renamed Universal Studios in 1996.

You can read a Timeline from 1959 to the present at the Universal
Studios web site. The link is
http://archives.studio.universalstudios.com/timeline1959.html

A company overview of Vivendi UNIVERSAL Entertainment can be found on
the company's web site. The link is
http://www.universalstudios.com/homepage/html/about_us/

3. Miramax Films. Miramax is owned by the Walt Disney Co.

You can read about the latest films produced by Miramax Films on the
company's web site. The link is http://www.miramax.com/

You can read the latest Walt Disney Co. news on a Yahoo! Financials
page. The link is http://biz.yahoo.com/n/d/dis.html

4. Orion. ABC Productions bought out Orion Television Entertainment
when Orion Pictures filed for bankruptcy in the mid 1990s. ABC
Productions merged with MGM (Metro-Goldwyn-Mayer Studios Inc.) Studios
in late 1998. So, MGM Studios owns Orion.

The evolution of MGM/United Artists Studios is outlined detailed in a
web site. The link is
http://members.fortunecity.com/teamfx2000/movies/mgm/

You may read more about MGM Studios at the company's web site. The
link is http://www.mgm.com/

5. 20th Century Fox. 20th Century Fox is owned by Fox Entertainment
Group, Inc. Most of Fox Entertainment Group, Inc. is owned by The News
Corporation Limited (NYSE: NWS).

You may read Fox Entertainment Group, Inc.'s corporate profile. The
link is http://www.newscorp.com/feg/index.html

You may also read more about the News Corporation Ltd., the majority
owner of Fox Entertainment Group, Inc. The News Corporation Ltd.'s
link is http://www.newscorp.com/investor/index.html

6. Universal. Universal Studios is owned by Vivendi UNIVERSAL
Entertainment.

A company overview of Vivendi UNIVERSAL Entertainment can be found on
the company's web site. The link is
http://www.universalstudios.com/homepage/html/about_us/
 
7. Warner Bros. Warner Bros. is owned by AOL Time Warner. 

You may read news, corporate information, and investor information
about AOL Time Warner on the company's web site. The link is
http://www.aoltimewarner.com/flash.adp

To conduct this research I entered the search terms individually:
castle rock,
mca, miramax, orion, 20th century fox, universal, and warner bros. If
the site of the companies that own each of these motion picture
studios did not immediately pop up at the top of the search, in
addition to the names of the studios I typed the word "owner" to
complete the search.

I hope this helps!