On October 30th, Tarn (and Scamps at times) did an interview with the University of Minnesota Video Game Development Club, and it has been posted over on YouTube here.
In early July 2013, Gamasutra posted an article about Dwarf Fortress by Mike Rose for which Tarn was interviewed.
In May 2013, MrSavaGhost began a YouTube video game series with a Dwarf Fortress interview.
At the end of April 2013, during our visit to Iceland for the EVE Fanfest and their art panel, we encountered a Giant Bomb camera crew and were briefly interviewed.
CCP was kind enough to invite us to Iceland and the EVE Fanfest. Here is a video of the panel Tarn was a part of, Games as Art.
Tad Sooter of the The Kitsap Sun wrote an article about Tarn, Zach and Dwarf Fortress which appeared in the April 7th, 2013 edition of the newspaper and online. Amy Phan also produced a video for the online version of the article.
Tarn did a video interview with the Penn State Physics Club on December 2012.
Here's an October 2012 interview with Roguelike Radio.
In June 2012, Tarn did an interview with AlterGamer.
dinosaurcity interviewed Tarn in September 2011.
Here's an online version of a New York Times Magazine article by Jonah Weiner that was bundled in with the NYT Sunday paper on July 24th, 2011. It even has some crayon art and ASCII portraits.
Brendan Caldwell wrote an article for Eurogamer about masochistic games that includes an interview (from March 2011).
Jaz McDougall of PC Gamer interviewed Tarn for their web site in August 2010, and they've posted it here.
Here's a repost of an interview Tarn did with Elijah Meeks/HASTAC in May 2010.
Tarn did an interview with Just Press Start in October, 2009 for Firebrand Radio (their site is down, but here is an archived version).
In August 2009, Tarn did an email interview which went up on PC Cohort.
Tarn had a (long!) conversation (~60MB, mp3) with Languidiir and A Madman from the MS Paint Adventures forum that went up on June 14th, 2009.
Tarn did an interview podcast for Dark Diamond on April 15th, 2009. My mic cuts out a bit (my fault!). You can get the first part from their site (or here, ~50MB, mp3) and there's also a longer second part (~90MB, mp3) that wasn't published there.
On September 8th, 2008, Tarn was a guest on Evil Avatar Radio (now In-Game Chat).
Matthew Boyd of kwanzoo and Three Panel Soul did an interview with Tarn which can be found here (Part 1,Part 2,Part 3).
Roleplaying Public Radio had Tarn on for an audio interview (May 19, 2008).
Tarn was interviewed for an article on independent game developers for The Escapist that went up on March 4, 2008.
Gamasutra posted a DF interview with Tarn on February 27, 2008.
In January 2008, Tarn did an interview with GeekNights.
Dwarf Fortress was the 2006 Indy PC Game of the year at the 2006 Gamers With Jobs Community Game of the Year Awards. There are lots of interesting articles at their site, and they also have a podcast (on which both of us were interviewed by Julian Murdoch). It was our first live interview, so we kind of fell apart, he he he.
Julian Murdoch also wrote an article about the game which appeared in Games for Windows magazine. There was also a DF article in PC Gamer UK (which we've seen, thanks to Martin) and a PC Powerplay article (which we haven't seen!).
Bill Harris has written about Dwarf Fortress on his blog Dubious Quality and has been very supportive of the game since the initial release. We did a two part interview with him and his readers back in January of 2007.
Thanks to the playtesting team of Alan Ames, Alex Mooney, Martin Packman, Ben Ringland and Zonk for locating problems and making suggestions prior to the first release.
Thanks to Fuzzpilz and Prospero for hosting the early DF movies.