Oh dear, Now that I've sparked your interest, I haven't had time to go back and track down the right stories. They're all on seventh-dimension.org under characters-Richie, and I think a lot of the fics there are well written. I love the ones that are with Tessa and Duncan and their relationship/family with Richie that we never really saw on the show. Well, this one's nice and angsty, AU http://www.seventh-dimension.org/stories/Saralynn/Abandonment.txt
(no subject)
26/2/11 04:03 (UTC)duncan and Richie go camping http://www.seventh-dimension.org/stories/Hudson/NoGoodDeed.txt
There are other good ones, I know
Course I also have an odd affinity for Richie/Joe, lol