By the way, another country you can add to the no-visa list is Croatia. I was going to travel there in 2007, and confirmed it with them over the phone. The following information is taken from their embassy website (it's still current, I just went there and checked):
By way of exception from paragraph 1 of this Article, holders of valid travel documents for refugees or travel documents for stateless persons issued in:
-EEA member states, Principality of Andorra, Principality of Monaco, Republic of San Marino, Swiss Confederation, United States of America, Vatican City State,
do not require a visa for entering the Republic of Croatia and for a stay of up to 90 days or for passing through the national territory of the Republic of Croatia.
One thing they told me though, is that your travel document must be valid at least 6 months, so that's the only reason why I didn't go there (mine was 5 months from expiration at that time).