Below is a picture of some calendar features we really need in Knack's calendar, taken from here. To list the feature specifically, in order of importance:
- Ability to turn off categories
- Keyword search (not shown)
- Integrated List View, right next to Month, Week & Day, so we don't have to embed a stand-alone list view
- Clickable thumb-nail calendars in the side-bar
- Beautiful RSS and iCal icons