To install the Macromedia Flash Player plugin, first make sure you have the contrib section present in your APT sources, and then execute
#apt-get install flashplugin-nonfree
Install Web core fonts in Debian
If you want to install the Web core fonts (consisting of Andale Mono, Arial, Comic Sans MS, Courier New, Georgia, Impact, Times New Roman, Trebuchet MS, Verdana, and Webdings) that are found on MS Windows operating systems, and often used in web contexts, first make sure you have the contrib section present in your APT sources, and then execute
#apt-get install msttcorefonts
Install Sensor readings with lm_sensors in Debian
To read the various computer temperature, fan and voltage sensors in Debian, one can do that with lm_sensors. The package for that in Debian is called lm-sensors. It works smoothest with Linux 2.6 kernels, with Linux 2.4 kernels one needs an additional package with the kernel modules for your specific kernel.
To install lm_sensors with a Linux 2.6 kernel just execute
#apt-get install lm-sensors
And to find out which sensor modules one needs to load, execute
Applications to read the sensor data in Debian
Here are some programs that can be used to read the sensor data that lm_sensors provides.