http://blogs.discovermagazine.com/cosmicvariance/2011/03/30/how-to-get-tenure-at-a-major-research-university/

http://blogs.discovermagazine.com/cosmicvariance/2011/03/31/how-to-get-tenure-at-almost-every-other-research-university/

Pretty interesting discussion of how the criteria for tenure at top universities differ from those at others, especially since the ultra-focus top universities demand actually could be counter-thetical to scientific creativity, as shown in Simonton's "Psychology of Science" books.