New Apple
Along with a whole host of new tidbits about upcoming software at their WWDC, Apple also relaunched their website. Not only have they updated their rather tired looking global navigation, there is a huge range of effective Ajax-style elements that (mostly) add to the usability of their site. Their (possibly Google-powered - if you check their code) search is a particularly nice example which offers popular shortcuts even before you’ve pressed return. The amount of work and attention-to-detail that has gone into this is very impressive.