What is an OTS?

The purpose of an opening title sequence to a film is to establish the visual style of the film and to introduce the viewer to all or some of the following:

• Characters
• Location
• Narrative/Plot
• Genre
• Themes

unforgettable movie title sequences

In the link above, you can watch the top OTS' to get a good idea on how to make a successful OTS. The link includes a wide range of genres so it is not fixated on one specific film genre.