IrfanView

[basilisk128]

Pro tip: IrfanView is, bar none, the best quick image viewing application for windows.

Key features:
* Massive support for lots of image types, including .PSD
* Nearly instant launch times
* Batch resizing tool
* Thumbnail/folder view, slideshow, and so on
* You can fullscreen it and page through images with the arrow keys

Comments

[adamjaskie]

IrfanView, WinMerge, Nodepad++, and Sysinternals Process Explorer are the first apps I install on any windows machine after Firefox. Usually followed by a healthy subset of Cygwin (no X, no server type stuff, just Perl and basic *nix shell utils).