Fight Club	Owned by 196 people
The Matrix	Owned by 191 people
Gladiator	Owned by 184 people
X-Men	Owned by 132 people
Braveheart	Owned by 123 people
Saving Private Ryan	Owned by 123 people
Office Space	Owned by 111 people
Snatch	Owned by 98 people
Shrek	Owned by 95 people
Heat	Owned by 92 people
American Beauty	Owned by 91 people
Pulp Fiction	Owned by 91 people
Full Metal Jacket	Owned by 88 people
Ronin	Owned by 81 people
Memento	Owned by 78 people
Crouching Tiger, Hidden Dragon	Owned by 74 people
Blade	Owned by 72 people
Spaceballs	Owned by 70 people
Gone In 60 Seconds	Owned by 69 people
Clerks	Owned by 69 people

This list is based on the fact that people have named their DVDs the same.
If someone has named The Matrix just Matrix for example, it would not be added to the count for The Matrix. Oh well.

Amazon.com 100 Hot DVDs