Heck, even the notification screen and widgets screen is an evolution of the Today.prc from PalmOS days.
I need to play with my LifeDrive more. I miss that beast.
Also, Graffiti was the best on-screen ink implementation. Change my mind. :D
Fun fact: Palm's latest phone copies iWatch's user interface to a phone interface and makes it usable on a bigger device, it's both fun and awesome in so many levels if you ask me.
I loved my Palm Pre 3 gotten off eBay (though I had to hack it to enable Serbian 3G connection, and I put together a Serbian Cyrillic keyboard layout too :): cards and swiping on the home button when editing text (to go left or right by a character or two) were monumental for me. Along with the full keyboard, the first (and last) time I didn't hate typing on a phone :D
Edit: it was probably 3G and not LTE at the time :)
A shame the first Pre was just unusably slow. Innovator's curse, as usual.
I also remember the really natural way that Palm let you ignore an phone call by placing the phone face down to silence a call you didn’t want to pick up.