Here's a short list of Android apps you can (!not) live without.
PokeSite
-- Poke a site.
Secrets
-- It's from Google, so it must be good.
Sky
-- Weather widget from Jeff Sharkey.
Greed
-- Greed is good... Greed works.
Amarok Remote
-- Turn your G1 into an Amarok Remote
Android API Demos
-- Android sample apps
Terminal Emulator
-- Ever wish your G1 had a command line?
TunesRemote
-- Supposed to control your iTunes, but doesn't work
Handstand
-- What can we say? The icon is kind of cool...
Gravity Test
-- Shows raw data from the orientation "pitch" sensor
Log Collector
-- Responsible for the deaths of many trees.
Ring Control
-- The worldwide sensation, misunderstood by millions
GPS Tracker
-- Now there's an original idea... No one's thought of that.
Bluetooth Chat
-- Bluetooth chat app.
MotoBD
-- MotoBD.
Greed 2
-- Top Secret! Tell your friends!
MapTouchTest
-- MapTouchTest