I'm the same! It would be really helpful - if I have 2 hours to spare, I would rather spend the whole 120 minutes watching a film, than spend the first 20 minutes to find interesting films which could fit in my break. Same applies to dramas...
Also, it would be great to have the option to search dramas/films based on their length (as an additional filter in search results)... I have created a new suggestion for that.
In summary, it would be great to have more functions for accessing/viewing drama/movie length. Here are the related suggestions: