There are plenty of blogs explaining how to query for user information of friends of a twitter user. I initially wished to created an ego-network of a Meg Whitman, the CEO of Hewlett Packard, but looks like the data collection speed is rapidly reduced due to recent twitter data query policy changes.
I just managed to get the user information (wasn’t a great feat worth putting on a blog until recently). Here is the code, which heavily borrows from SO posts and few other blogs.