On the contrary, it strikes me as perfectly intuitive—perhaps because since long before the arrival of Leopard, I've been looking things up in Wikipedia via an AppleScript script which takes a highlighted word or phrase and constructs a URL around it.
I, too, have been using Wikipedia for ages (via an option-W Butler search window), and I agree that Apple's including a link to Wikipedia
somewhere is intuitive...just not in a dictionary window.
(I wish there were a Look Up in Wikipedia command in between Search in Google and Look Up in Dictionary in Safari's contextual menu.)
As a rule, I
never wish for anything, but... Right on!!! (That would be intuitive.)
As for users who somehow learned about Command-Control-D hovering (which I'd argue is itself non-intuitive) despite a disinclination to look at documentation or Apple PR, you'd think the presence of Wikipedia in Dictionary.app's window would be a tip-off (unless such users unchecked Wikipedia in Dictionary.app's prefs when first encountering it, then promptly forgot it ever existed...)
c-c-D is, indeed, non-intuitive, but it was visibly hyped as one of Tiger's new features.
On reflection, what I think happened is I hit dianne's "More" once, took a quick look around, and, being in dictionary mode, saw "Wiktionary," rather than "Wikipedia," and, indeed, promptly forgot about it. (Try c-c-Ding "quick" or "look" in the preceding sentence, and see if all you get is Apple and Wikipedia references to "Quick Look" [with Dictionary and Thesaurus grayed out] like I just did. Hmmm... c-c-Ding either word in quotes calls up their real definitions.
)
Or are you really stating that the Dictionary "panel" (that little floating fixed-size window invoked by Command-Control-D) so fulfills your word lookup needs that in Leopard, you've never bothered to use Dictionary.app itself?
If c-c-D's definition doesn't satisfy me I control-W to a Butler Webster's search window or flip open - dare I say it - my unabridged.
(I've now taken a look in Dictionary.app, and I see that it does not expand on the
definitions presented in the pop-up.)