What are your favorite apps?

This is an idea I flat out stole from writer friend Jay Kogen, but what are the iphone/ipad apps you just can't live without?   There are now something like a million apps.  I know twelve.  And some of the ones I have I never use.  Why did I bother downloading a lightsaber?

So if you would share your favorites, me and the rest of my viewers would greatly appreciate it.  I imagine there should