Useful App Indicators

System Load Indicator
Display graphs for CPU, RAM, network traffic, harddisk and swp space use.

sudo add-apt-repository ppa:indicator-multiload/stable-daily
sudo apt-get update
sudo apt-get install indicator-multiload

Weather Indicator

sudo add-apt-repository ppa:weather-indicator-team/ppa
sudo apt-get update
sudo apt-get install indicator-weather

Caffeine
Keep Ubuntu awake by disabling screensaver.

sudo add-apt-repository ppa:caffeine-developers/ppa
sudo apt-get update
sudo apt-get install caffeine

Lookit
Capture an area or the entire screen.

sudo add-apt-repository ppa:lookit/ppa
sudo apt-get update
sudo apt-get install lookit

Tomate
Inspired by the Pomodoro technique. You commit to working without interruption for at least 10 minutes which is usually the hardest part. After that, it becomes easier to continue working.

• Download from http://gitorious.org/tomate/natim-tomate/archive-tarball/master
• Extract the downloaded "natim-natim-tomate-master.tar.gz" file
• Follow the instructions in README.txt