Here is a list of commonly used screen resolutions
If there are two stars ** in front of a resolution that means that it is popular.

Widescreen Resolutions:

* 2560x1600
* 1920x1200
** 1680x1050
* 1440x900
** 1280x800
* 1024x640
* 800x500

Standard Monitors:

* 2560x1920
* 2048x1536
** 1600x1200
* 1400x1050
**1280x1024
** 1280x960
** 1024x768
* 800x600 (used some mainly on older monitors or for people that cant see as well)

High Definition

* 2560x1440
* 1920x1080 (1080p)
** 1280x720 (720p)

Television Resolutions

* 2560x1707
* 1440x960
* 1281x854
* 1152x768