Triggering System Services from AppleScript

Is this possible? I’ve Googled a good amount on at least three occasions, and I haven’t been able to figure out how to do it. (Of course, it doesn’t help that Jobs picked “services,” the most generic term ever, to describe a relatively obscure feature of NeXTSTEP…)

Right now I’m creating a new document in DEVONthink, pasting the text in it, selecting the text, and using GUI scripting to trigger the Service. Completely ridiculous, and looks stupid.

GUI scripting is probably the only possible solution. But the first two steps could be simplified by using the “paste clipboard” command.