I had a little look through the API changes to find some neat new details, and put together a couple of JUnit tests that show them by example here.
That whole GitHub project is a Guava showcase, so if you can think of some more examples that should be in there, please fork! Especially the IO, Net, and Concurrency bits could need some examples.
I've also taken my old blogposts about Google Guava and ported them to tfnico.com/presentations/guava. After noting this, the Guava guys honored the effort by linking the page from the Guava homepage, which gave me quite the traffic bump! Luckily, my pages are all hosted on Google servers, so it's their own bandwidth bill ;)