Report Builder Top N functionality

I'm not seeing any built-in functionality for Report Builder to get Top N values. Am I missing something? Is there a way to do this? If not, is there a way to simulate this functionality?

Thanks.

PJJ

This should help:

http://msevents.microsoft.com/cui/WebCastEventDetails.aspx?culture=en-US&EventID=1032306508&CountryCode=US