Ask HN: What calendar app(s) do you use?

I'm struggling to find a calendar app that isn't tedious to start an event, has too many unnecessary inputs, isn't difficult to see what upcoming events I have, has the ability to view my schedule at a glance, etc etc. Some days I require a task list and some days I require more of a meeting schedule. I've tried a few calendar apps (mostly on Android Market) and I end up not using them because they are just lacking for me.

What do you use? Any other organizational software you would recommend?