Gary Fisher Bikes' website features a nifty Flash application for finding the bike that's right for you. While you're just answering simple questions, you're actually sifting through facets to achieve a result.
Today on a mailing list, Christopher Fahey pointed out something else on Fisher Bikes. Use their Compare tool, selecting three bikes. Then do it again, selecting only two.
Ha!
"Interaction Design" is one of those terms that we 'user experience' types use that refers to something that *everyone* is familiar with. Marc Rettig makes that clear in his presentation, "interaction design history in a teeny little nutshell" (PDF, 3.2 MB).
Even if you think you know everything about interaction design, you should check out the slides because