Microsoft's portal for Terminal Services is an excellent all-around resource for finding useful TS information. There is also a Terminal Services FAQ on the portal site.
A great site for technical discussions of network computing, including several scholarly papers done on Terminal Services.
The Unix/Linux TS client port.
A classic discussion of the differences between mainframe and micro computing by Steve McConnell. It has some interesting implications as we cycle into the world of centralized computing for Windows; notably, there are very clear reasons why programmers should NOT be developing on your Terminal Server. This is an excellent philosophical paper for distributed-vs.-centralized computing issues.
"What? The speedo only goes to 320?". Check the movies page to see Kuzuhiko Nagata set his 194-mph record on England's A1.