If you're looking for a more free-form notepad app, consider Springpad. This app lets you take notes that can include text, photos, and/or audio. Springpad automatically categorizes your notes into directories called notebooks based on the topic of your note, but you can also add your own notebooks.
If you want to save something more specific, such as a book or movie, Springpad allows you to search for that information on the Web and then save the information as a note. You can also enhance the app's capabilities by adding Springpad widgets from within the app.