Indispensable Android apps...

in my geeky opinion, each with links to the Android Market.

General applications:

• Evernote
• Dolphin Browser HD
• Kindle

Astronomy specific:

• Mars Images
• Moon Phase Pro
• SkySafari

Geology:

• Earthquake!
• Google Earth

Specifically for the Galaxy Nexus:

• Light Flow
• More Quickly Panel

Cool physics game:

• Apparatus

Miscellaneous utilities:

• Astro File Manager
• ConvertPad
• Flight Track
• RealCalc Scientific Calculator
• Splashtop Remote Desktop