A bit like Sitelinks - I've also been asked whether there is anything we can do to encourage results to appear in a multiple section SERPs layout... A bit like this example for "tokenizer" taken from a Webmasterworld  thread:

And the answer is......

No.

Sorry.

Matt Cutts wrote about it back in August 2005 - it's Google trying out algorithms and trying to be useful. The problem with this one is it hasn't even got a cool name! And of course the other problem - is what counts as the #1 spot? Or are there 3 different #1 spots...