You have Irfanview and love it.. but now there's XnView
 

http://perso.wanadoo.fr/pierre.g/xnview/enhome.html

Very nice alternative to Irfanview, with built in image browser (like ACDSEE).
It also has versions for PocketPC, MAC, Linux.. in fact pretty much any operating system you can think of.

It supports skins too.. :) .

After using it for a few days.. it's rapidly becoming my preference over Irfanview.

Re: You have Irfanview and love it.. but now there's XnView
 

Also on that site is NConvert a freeware batch conversion utility.. very useful if you take a lot of digital photo's like me ;)

Re: You have Irfanview and love it.. but now there's XnView
 

See also:
http://www.firegraphic.com - Firegraphic 6 free
http://www.senosoft.com - P3Do Explorer
http://www.freshdevices.com/freshview.html - Freshview (emailware)
http://www.slowview.at/ - and if you want ye olde Slowview (a pun on Quickview), get it while it's hot! - superceded by non-freeware, but available until Dec 2004
http://fileforum.betanews.com/detail/978930288/1 - Slowview screenshot included.