If you use Google Calendar like I do, and you have an iPhone, this is great news! Just yesterday I modified HAWS.NET to detect the iPhone browser agent and serve up a iPhone friendly view. Google has done the same with Google Calendar.
Official Gmail Blog: Updates from Google Docs and Google Calendar
Added benefit – calendar colors! It’s always bugged me that the iPhone does not show calendar colors. I sync my phone with iCal on the mac and Google Calendar. When I look at the iPhone calendar events do not show what calendar the belong to. No I can see colors in my calendar! w00t!