The largest film industries in the Spanish-speaking world are found in Spain, Mexico and Argentina, but film is an important part of the culture of other Latin American countries as well. Here are a few resources to get you started:
For Telenovelas, try
The University Library has a large collection of Spanish-language films. To find them, use the Library Catalog's Advanced Search. If you are looking for a particular film, you can search by movie title.
Otherwise, limit to "Spanish" language and "film/video" and then search by any subject or keyword. At the results screen you can further narrow your search by using the limits on the right sidebar of the page.
Below are direct links to some popular searches you might be interested in.