Just love the Hipmunk (for Business) UI facets for discovering information. You can filter by Agony, Spite, or Vice!
Seems like a reasonable balance given that all you can do with business travel sometimes is just laugh about it!
I first came to hipmunk.com through a paper presented by Oracle Fusion User Experience Advocate (or FXA) Sten Vesterli (@stenvesterli) at an Oracle Usability Advisory Board meeting in Geneva earlier in 2012. Nice! And there are lots of other powerful and edgy UX features in the solution too (Gmail calendar integration, contextual actions dialog box, and so on). I'll be using Hipmunk as an example of great UX too, shortly.
If you want to mention the funky side of UIs or anything referenced by me, then acknowledge the source.