A key ingredient to making a film is selling it and getting it seen. To help do that it is very important to have an awesome poster, website, DVD cover, etc. In designing any of those, you have to make sure you have the right font. You can’t just whip something up fast and use a default font on it.
Thankfully we have free sites like 1001Fonts. I have used 1001 for the past few years. They are constantly updated and have such a wide variation of fonts. They showcase both original stuff and fonts that mimic popular shows and movies. The site is set up around user feedback and the creators of the fonts have a direct line of communication with the people using them. Heck, if you wanna, you can even try to make your own fonts and post them on the site. You can take their site tour here.