Here are a few links to some very nice railroad photography and railroad news sites.

Grumpysworld (Jim Gilley)
Shoey's Rail Pics (Greg Shoemaker)
Somewhere West of Denver (Chuck Donaldson)
Graham's Railroad Page (Graham Atkins)
Don's Darkroom (Don Bowen)
Don Winslow Railroad Photography
Mountain West Rails (Paul Birkholz)
Southwest Shorts (Wes Carr)
Railroad Crossings (Brett Wirick)
Railroad Info.com
Oakbrush Digital Images (John Mathis)
RailServe News Site (Christopher Muller)