IrfanView: An amazing low-cost free tool

There are a large number of image formats available such as .BMP, .JPG, .TIFF, .GIF being some of the more common ones. We normally get a number of images during the course of a week, whether they be from friends of family. At such time, the need is to have a good tool that can open such images fast, and preferably using a free tool. IrfanView meets all these criteria.
IrfanView can be downloaded from this link.

The feature list for IrfanView is available below (and this would meet most people's needs)

Support for a range of formats such as BMP, JPG, GIF, ANI, CUR, DIB, CAM, CRW, CR2, EMF, ICO, JPEG, DNG, NEF, ORF, PCD, PNG, PSD, PSP, RAW, SWF, WMF, MID, MP3, OGG, WAV, ASF, AVI, MPG, MPEG, WMA, WMA (Full list available at this link)
Multi language support
Thumbnail/preview option
Toolbar skins option
Slideshow (save slideshow as EXE/SCR or burn it to CD)
Show EXIF/IPTC/Comment text in Slideshow/Fullscreen etc.
Support for Adobe Photoshop Filters
Fast directory view (moving through directory)
Batch conversion (with image processing)
Multipage TIF editing
File search
Email option
Multimedia player
Print option
Change color depth
Scan (batch scan) support
Cut/crop
IPTC editing
Effects (Sharpen, Blur, Adobe 8BF, Filter Factory, Filters Unlimited, etc.)
Capturing
Extract icons from EXE/DLL/ICLs
Lossless JPG rotation
Many hotkeys
Many command line options
Many PlugIns
Only one EXE-File, no DLLs, no Shareware messages like "I Agree" or "Evaluation expired"
No registry changes without user action/permission!