Nobody tagged me :( But I will talk about my phone anyway.
If you remember, I recently purchased my phone from ebay as a replacement to a sony ericson phone that died. My new phone is the HTC 8125. Here is what I have on my phone:
* A screen protector. I bought some screen protectors from BB and keep them on the screen so that I don't worry when I put the phone in my pocket or use my fingers to navigate it.
* Omapclock. I use this application to overclock my phone. I updated it 40mHz higher than the factory defaults. Surprisingly this is enough to make a difference in performance :)
* TomTom. I have a GlobalTop G33 bluetooth gps receiver that I use with this application. The receiver was $50 shipped and can handle 51 satellite signals at once... plus the battery lasts for 20 hours on one charge. Oh, and it easily fits in a small pocket.
* Faria ROM. I updated my phone to the Faria WM6 ROM. This includes some nifty tweaks that make the phone even more usable.
* HTC Home Customizer. This allows the today screen to have a big clock on it, and show current weather as well as provide me quick access to my contacts, among other things.
* OneNote. I like that I have a slideout keyboard, and having OneNote on my phone makes it easy to make use of this keyboard. I use this to jot down notes, little thoughts that I may have... then it syncs with my pc's OneNote
* Age of Empires. This is the only game I need... it is actually a full fledged version of the pc edition. You should check this out if you haven't, very cool for dull moments.