My friend in San Francisco is getting a Touch, she says there is free wifi available virtually everywhere in her city. I'm in Kansas City, though, and there is free wifi available almost Nowhere. I also like that, with a few dollars worth of apps, I was able to ditch my Palm Pilot, so now I have one fewer devices rattling around in my purse. Yay! (I used the Palm mainly to track my spending/expenses, and to keep track of my grocery list.) Also, my friend has Sprint and likes it.
A couple others that I found that I like are: iTV, shows tv guide sort of things, plus movie times, reviews, and previews (free!). I think I can also access my NetFlix account from it, but I haven't tried yet.
Photoshop (free), I just got that last night. Very cool!
I Can Has Cheeseburger (free), I like that it also shows pics from Fail Blog and Totally Looks Like.
I just got the free trial of Fish Tycoon, I used to play that on my Palm. Probably won't get the paid version, I always lost interest after a few days and all the fish would die!
I like Lemonade Tycoon (also got the free version).
Oh, and I try to buy from companies that don't test their products on animals, so Cruelty Free is a great resource to have with me when I'm shopping. I can just look up the brand right there in the store. Also free.