Also for you:

sanitary pads
makeup ( for pictutes)
comb/brush
shampoo/conditioner
camera

for baby:

car seat
tam
formula (since you are not breast feeding. The hospital will have formula but I would assume that you would want your baby to start off eating the brand that you choose so that he/she will not have to switch.)

make sure the going homeoutfit is loose enough to not irritate the navel string.

Edited to add: you will also need a phone card or a cell phone so that you can call family and friends and tell them the good news.

I think you've got it all there, just remember dont pack the whole kitchen sink lol you'll be coming back with double with all the presents and anything you do forget you can have someone collect for you. Just bring the essentials

I was doing it through a magazine before and it had an artical in it about hospital bags and was advising women to get two "brilliant" products one was a $35 lip balm for the delivery room and the other was a $55 "refreshing mist spray" I couldn't believe they were advising women to waste $75 on stuff that at the time you really ain't going to give a damm about. A wet face cloth does the same job during the hard stuff and dry lips is the last thing on your mind.
Sorry back to the question - you have pretty much got it covered, and if you do forgot anything just ask one of your many visitors to pick it up for you. But definately take your own sanitary pads the hospital ones resemble a loaf of bread!!