Google's recent websites for marketing - this and http://www.themobileplaybook.com/ - really stand out. Their production value is just amazing, and in case of Mobile Playbook, content is great too.
I'm a front end dev, and have worked on some big and gorgeous sites, but damn... I've been working on startups for a couple of years and feel like the web has moved massively in that time... who ever is making this stuff is amazing (although I assume this isn't a single man effort)
Who else is feeling inadequate ;)