Radar Now is awesome. National Weather Service Doppler radar from the closest airport. The "current conditions" like temp and humidity and stuff can be an hour or so old, but the radar images themselves are within a minute or two of being current.
I use the Weather Channel app, too. Tried WeatherBug, but it messes with the GPS a little, seems to use more battery than it should, and the radar isn't nearly as accurate as Radar Now.
One kewl app is the Barcode Scanner. It comes in handy for lots of things, and is used by several other apps. You can use it to scan QR codes at places like
Androlib where you scan the code and it takes you right to the Market to install it. Another one that's pretty nifty is
ShopSavvy, which lets you scan bar codes, and then gives you price comparisons online, and if you're on a larger city, local prices, as well.
While I'm thinking about it,
Bluetooth File Transfer is pretty awesome. Let's me transfer files back and forth between the Droid and the computer, as well as manipulate files from either end, without having to tether. You can send files from phone-to-phone the same way.
If you deal with files,
AndroZip File Manager is a must-have. So is the
ASTRO File Manager. Both are good, but do different things.
Bubble is pretty kewl. Comes in handy once in a while. It's a bubble level, like you'd use in construction.
GPS Test is good to have to quickly see satellite information, current location and time, etc.
GPS Status is excellent. Check your position, GPS accuracy, speed, even acceleration, and with the compass that shows both magnetic and true north, you can check your bearing. My Garmin doesn't have an altimeter. Well, it does, all GPS receivers do, only mine doesn't actually display it. GPS Status does. With the included compass, it also comes in handy when setting up the VuQube satellite dish.
There are lots of notepad and to-do list apps, but one of the better ones is
Note Everything Pro. You first install the free
Note Everything, which is not bad, and lets you create text, voice and paint notes (finger scribbles), organized within folders if you like, and then you install the Pro version on top of it. The Pro version adds actual checklists and durable checklists (for repeating stuff), as well as encryption, reminders and the ability to stick notes onto the status bar.
I use
MyBackup Pro which lets you schedule automated backups to secure servers or the SD card. Backs up pretty much everything, including Applications, Contacts, Call log, Bookmarks, SMS\MMS, Calendar, Settings, Home Shortcuts, Alarms, Dictionary, Music Playlists. It also integrates with apps like Note Everything to back up your notes, as well.
If you have even a slight Tekkie streak, you'll need
Tricorder, which turns the phone into a functioning tricorder that gives you real-time, accurate data from the sensors in the phone for things like the local gravitational field, the local magnetic field, acoustic environment, geographic location, electromagnetic spectrum for radio signals like WiFi and cellular strength, and then there's the SOL screen which download directly from SOHO the current status of the sun and the solar winds.
And then there's the whole fart app category.
