Alex King, a WordPress über-hacker (and formerly a b2/b2evolution hacker), is writing a series of posts about his recent redesign of alexking.org. His latest post describes the numerous WordPress plugins he's using, many of which he wrote.
I'm not using any of these right now, but I steal Alex's ideas and code all the time for my own hacking.
P.S. Oh yeah, I'm using WP Grins. Thanks, Jeff.