I've had an iPod Touch for a while and was one of the first to get the Verizon iPhone (and I waited and waited for it too - so I understand your excitement

) Since my roommate and I both have them and so do you and your DH - there are some apps that make running a house a little easier and some that are just fun. Here are some of my faves:
NoteSpark - an app for lists of things that you and your DH can share, edit, and work off of together.
OurGroceries - just like the name sounds, a grocery list app where you can have lists for different stores, separate by category, even have a recipe. This is shareable if you register the app on each phone to the same email address - and they synchronize!
LoseIt - food and exercise tracking, weight loss chart. You can have friends inside the app and share information and recipes.
Phase10
FaceBook
Pack and Go Deluxe (vacation lists)
AAA Roadside/AAA Discounts/AAA TripTik
PDFReader
Walgreens (awesome to refill meds and pick them up at any Walgreens in the country)
Pandora
Kindle (synch with my Kindle or use on it's own even if you don't have a Kindle)
Fruit Ninja - great game for kids if you need a short term distraction (fun for adults too)
eWallet - secure storage for website passwords, credit card/bank account info
Enjoy!