Features
- It currently reports number of missed calls, unread SMS and unread email messages of any phone’s Gmail account (if you have Gmail app up to version 2.3.4.1).
- Also reports notifications from any application that uses the notification bar to report events (including WhatsApp, Tweetdeck, e-mail clients, etc).
- Customization of font and background color and transparency. Also font faces (can use fonts stored in external SD card).
- Customization of the layout (alignments, padding, etc).
- Text messages can be customized to show whatever phrase you want.
- Represent numbers as text.
- Multiple widget sizes. User can select which sizes appears in widget list.
Requirements
- Android version >= 2.2.

Download from Android Market
Current version: 2.1.0 (see changelog)
Bugs can be reported in the forums. Also, suggestions are welcomed (I recommend to make them through its UserVoice page, so I can track them more easily).
IMPORTANT: Missed It! must be enabled as an Accessibility Service to be able to receive application notifications (‘Settings » Accessibility » Accessibility services’).
PLEASE NOTE: To be able to put this widget in the lockscreen, you will need a lockscreen replacement app (search on the forums or in the Android Market).