I've been to 22 DMB shows (i am 25)! And haven't done to any in 3 years.
My Must have apps are (most have been mentioned)
TweetBot
1Password
Instagram
Lose It
ESPN Scorecenter
Evernote
Dropbox
Xfinity TV
POCKET (Old read it later)
fandango
Amazon
Watch ESPN
Day 1
Yelp
Nest for my Thermostat
Also 2 apps i use EVERYDAY are
Things
Clear
Both are ToDo lists. Things i have the desktop version and now with cloudsync and being able to add with Siri through reminders i am using it twice as much. Keeps every day i have on track and such.
I use clear for different types of lists, Grocery lists, List of things to buy for my home, list of clothes i need, places i'd like to eat. Really cool interface when you get used to it.