A single page with search forms for many of the sites I search.
Just being able to search IMDb without having to wade through a bunch of "engaging content" first is worth every minute spent on refining this form!
NOTE: Some forms require an API key to work (but usually free to obtain). Instead of saving these in the file I've implemented a crude facility to load and save these, i.e. when you've entered the key in the form field(s), click the Save API keys button to put them into your browser's Local Storage (this requires that you're running the page using either https:// or the file:// protocols). You should only need to save them once - after that you can just load them whenever you need to call those specific services. Yes, I'll consider auto-loading them at some point :)