Requirements: Android OS
Price: US$6.99
Overview: Executive Assistant provides an all-in-one interface for quickly reviewing your:

+ Email: any combination of GMail, Google Apps, or POP/IMAP accounts. Exchange too if you use the K-9 email app.
+ Text messages: both native and Google Voice, including pop-up and reply options
+ Missed calls: return calls directly from the app
+ Calendar events (including Exchange & Facebook if supported by your phone)
+ Tasks: Astrid, Got To Do, GTasks by Dato, or ToDo Task Manager (lite or pro)
+ Google Reader
+ Twitter timeline
+ Facebook news

Recent changes:
Integrates with TouchDown by NitroDesk.
Item-view for email: if you use TouchDown or K-9, tapping an email message will open that message in the respective app.
Item-view for events: if you use the stock Calendar app or TouchDown, tapping an event will open that event in the respective app.
Item-view for tasks: if you use TouchDown, tapping a task will open that task in TouchDown.