My current favs are
I go into preferences and change my dock to "Froyo Wide" then change all icons so they are in color. I also limit to 3 homescreens (all i need). Then i go into general settings under Hidden Apps, and i hide all the nonsense i will never even use, but cant/wont uninstall. Then i increase the speed of everything to max, so it snaps
LauncherPro - Android app on AppBrain
Great 2 week trial, then i think $5? Best money i have spent! I love this as a replacement to the stock music app.
PowerAMP Music Player (Trial) - Android app on AppBrain
One of those sexy girl apps, but this one is pretty decent! Lets you zoom in or save. Also if there are 15 pics of one girl, you can hit the BACKWARD button to skip right to the good stuff hehe.
AppBrain - Android app content warning
Great reader for google reader. I know they have their own reader now, but im so used to this one! Allows full offline syncing, great for me since i read most underground in the subway. Also can sync once every 6 hours or something to save battery, and only when on wifi
NewsRob (Google Reader / RSS) - Android app on AppBrain
Touch Pool 2D
Not the best game, but it kills time.
Touch Pool 2D Lite - Android app on AppBrain
Gem Miner; Dig Deeper
Addicting game where you dig through a cave to find gems! Discovering new sections of the cave as you go. Risk running out of breath, or having rocks fall on you if you dont put a post under them quick enough. Free version also available
Gem Miner - Android app on AppBrain
Drop an APK anywhere on your sdcard, and run this app .. it will find it and give you options to install it! Simple, functional, and free!
appInstaller(Christmas) - Android app on AppBrain
I love the widget, and info you get when clicking on it. Best i have used, and from what i can tell it is not using any energy of its own
Battery Left Widget - Android app on AppBrain
I made fun of them for adding such a stupid app onto the phone, but i must say this thing has saved my ass multiple times!!
Anyone play warcraft, or other games where people talk on Ventrilo? This app makes it easy to connect and talk from your phone. Awesome!
Mangler - Android app on AppBrain
I actually hate sports, and dont follow a single thing. All my friends make fun of me .. but once in a while ill pop this open and start spitting out facts, scores, details, etc ... and they are all like WTF?? haha ... very accurate, and easy to use
ScoreMobile for Android - Android app on AppBrain
Easy to use, and free! Open it and activate it, shake phone to take Screenshot!
screenshot - Android app on AppBrain
SMS Backup & Restore
Got sick of losing all my txts when changing ROM's, this little app made it a breeze to restore every last one of them in a heartbeat!
SMS Backup & Restore - Android app on AppBrain
Smart Keyboard Pro
I love the Android keyboard it offers, with no "ALT KEYS" on top of each key. This makes a beautiful keyboard.
Smart Keyboard PRO - Android app on AppBrain
Im not a fan of the stock look of SMS on the Android. With Handcent it allows me to give it that "bubble" look similar to the iphone, but then customize it even more. And i cannot believe its free!
Handcent SMS - Android app on AppBrain
Uses no battery. Manages my wifi for me! Remembers wifi locations against cell towers, and knows when to turn on/off my wifi without me even thinking about it
Y5 - Battery Saver - Android app on AppBrain
I bought the pro version, but i like the Beta version better! Just install it, enable it, and dont touch a single setting! It always seems to make a HUGE impact on my battery life.
JuiceDefender beta - Android app on AppBrain