Request: Add ability to show sermons from all categories

Currently each view is forced to select a category which I find a hindereance in presenting sermons. I like the idea of categories and find them useful but I still want the ability to show all categories on a single page.  I realise you can select 'uncategorised' which perhaps is fine, but it would be good if there was also an "All categories" option.
This addition would then benefit from a new drop-down filter for Category.

I prefer to follow the way Joomla handles its content. Otherwise I need to much workarounds.

For you the simplest way would be to create a "parent" category where you put all your categories in it. You can then select that category and let it include the items from each subcategory as well.

"Uncategorised" is just default category. It doesn't have any special behaviour.

Perfect, I'm a pretty newish Joomla user so that never occurred to me. Works perfectly!