Anonymous methods and collections in Whidbey #.NET

Pretty sweet. Build a new list containing all the elements in another list that meet certain criteria... with a single method call and an anonymous delegate. Passing an anonymous delegate as a comparer to Sort. Building a list that contains some other list's elements run through some conversion (like Perl's map function). Nice stuff. Pity about the stylesheet, though...

Thanks to Eric Gunnerson for posting the link.