Question about sync'ing

I don't own an ipod touch yet but was wondering if someone can answer this question for me.

If I enter a calendar entry via the ipod touch and if I then sync with my itunes will I see that calendar appear on my ical? I know with the classic ipod if you sync it only moves what you have from itunes to your ipod and not from the ipod to itunes?

If it does sync both ways for the calendar...does it also do it for the contacts? and what about the notes feature?

Thanks in advance