There's an interesting vintage steam train called The Prairie Dog Central that runs excursions out onto the open prairie from Winnipeg, Manitoba, Canada. The locomotive is a restored American Standard type 4-4-0 with a big a big smoke stack, built in April 1882 by Dubs & Co., Glasgow, Scotland, originally for the Canadian Pacific Railway.

Perhaps the weirdest steam train I ever rode was in 1988 in Nepal. The Janakpur Railway is a narrow guage that runs from the town of the same name to Jaynagar just over the Indian border. Because there's no highway link, the line is an important access route for Hindu pilgrims traveling to the important shrines in Janakpur.
Because of Janakpur's importance, one would imagine the rail line would be in good shape, but it's got to be the most dilapidated railroad in the world! The trains are now pulled by antiquated diesels, but when I visited they were still using steam: some German-built 2-6-0 tank locomotives from the 1930s and a few newer British "Hunslet" 0-6-0 engines. The track, locomotives and rolling stock were falling apart from lack of maintenance. There was more humanity on the roofs than inside the packed cars. The nice thing was, when the crowd got too much, one could always jump off and walk a while, then jump back on. It took over two hours to cover the 29km. For some interesting pics:
http://www.farrail.net/pages/touren-engl/nepal_nov-2005.html