I love my Droid too!

I downloaded tons of apps when I first got my phone. I have since unistalled many of them. These remain my "go to" apps.
Better Alarm (allows you to use any mp3 as your wake up tune- this is the only alarm clock I use now and wake up to Second Star to the Right!!

)
Budgetroid (great for keeping track of expenses on vacation)
Calorie Counter (I love that you can sync to the computer and track your diet & exercise)
DroidLight (great flashlight that uses the LED flash)
EverNote (notes you can sync with your computer)
Google Calendar- syncs to my computer
LiveScore (up to the minute scores for any sport)
TripIt (keeps all my vacation confirmations, plans, ticket #, ADRs, etc in one place- and it syncs to my laptop!

)
WDW Lines (mentioned above- need a subscription to touringplans.com)
for games, these 3 are my favorites-
Bejeweled Magic
Word Up
Sudoku
You can probably see a trend here- I love apps I can use on my phone or laptop. That way my info is always backed up and I can enter from either location.