Who has updated their iPad to iOS5?

If you have, what's the coolest thing you've found so far? Have you:

Tried iMessage? You can send and receive unlimited text, photo, and video messages wtih other iOS5 users, track messages with delivery and read receipts, and use secure encryption, among other things.
Tried the new Reminders app? It syncs with iCloud, iCal, and Outlook.
Tweeted with the new, builtin, Twitter app?
Used new Mail formatting options like bold, italic, or underline? (I haven't!)
Set yourself up with iCloud?
Synced wirelessly with iTunes?

Yup, upgraded last week (iPad 1 -- my iPod Touch is too old to upgrade).

I'm grooving on the notifications and the reminders app. If I didn't leave reminders for myself, I'd never remember to do anything.

Haven't had a chance to use iMessage yet.

Upgraded my MobileMe to iCloud and notice that the iCal events are much improved.

I don't twitter...

And wireless synching is the bomb!

love the iCloud!! and yes that wireless syncing is so far the best they've developed!