In an effort to quell the weekly requests for how my CMD + ESC trigger works to load a selected item (or multiple selected items) into Quicksilver, I’ve done an impromptu screencast on the setup. Call it Bonus Wednesday.
Anyway, I’m at work, so there’s no audio, but you should be able to follow the visual cues and roll your own at home. Setting up the CMD ESC Trigger in Quicksilver.
All further screencasts will probably link to this one as well, so future readers don’t have to ask the question again. :)
EDIT: Richard points out that this is indeed a trigger that Quicksilver [now] ships with. See the screenshot below. It may just be a matter of assigning a keystroke to this trigger.