First, it's a pocketPC, so you can install ALL SORTS of useful applications, games, etc.
2nd. I no longer use an Ipod. I use a 2gb miniSD card full of music and the media player in my phone (I have about 5 SD carRAB of music).
I sold my GPS, and bought a bluetooth GPS adapter.. Now my phone is my GPS.
It has a full keyboard, which makes texting SOOOOO much easier.
I only carry a digital camera if I'm going to an event. For all the moments you just want to snap a quick pic, the 1.2 megapixel camera in the 6700 does fine.
If you are a business person, you can put so much productivity stuff on there that you barely even need a laptop anymore, and you certainly don't need your laptop with you every second.
I can tether it to my laptop and use it as a modem.
Voice memo's.
An awesome notepad/to do list
An address book that makes other cell phones cry in mercy. I've had other phones that I had to make 2 or even 3 contacts to get all the info I needed.. This one allows about 5 different phone nurabers per contact, 2 emails, birthday and anniversary dates, etc.
Basically, since I bought this phone, my pockets are a lot emptier, because I don't have to carry nearly as much crapwith me... and I can do more than I ever did before.