Also known as New Zealand's fourth most popular folk-parody duo, FOTC are a folk-comedy two piece composed of Bret McKenzie and Jemaine Clement. Their comedy and music became part of a BBC radio series, and then two seasons on American television (HBO, I believe), which began in 2007.

For a sample of who they are, check out this video, and other related videos that come up: YouTube - Flight of the Conchords- Business Time

I like FOTC, and it's not just a little bit of self-righteous nationalism; I think they're legitimately funny, and their music is great. I was disappointed to hear that each episode in the second season of their HBO show had fewer and fewer viewers. If you haven't seen this show, it's about these two small-time musicians (Bret and Jemaine, obviously), who have traveled to the Big Apple to try and make it big. Their (fictional) band manager, Murray, who works for the New Zealand consulate, tries counter-productively to get them to the top, and the results are hilarious. They incorporate their music into the show, periodically breaking into songs that relate to the situation at hand.

If you think FOTC are great, seeing them live is even greater. I've seen a show by the pair, as well as a stand-up routine by Arj Barker ('Dave' in the show), and I've exchanged pleasantries with Rhys Darby (Murray) at a Greenpeace rally (along with Keisha Castle-Hughes (Whale Rider) and Lucy Lawless (Xena Warrior Princess)).

If you don't get their accents and humour, this may explain it:

Surprisingly, given their success outside of New Zealand, Bret and Jemaine are rumoured to have had project proposals continually denied funding by New Zealand public television. As Brannavan Gnanalingam notes in The Lumiere Reader, rumour has it that NZ TV3 denied funding because Bret and Jemaine's humour was deemed "too Wellington", meaning their humour would not work with the average New Zealander outside the nation's capital.
In other words, I sound like these guys, and this humour is all around me. I'm not sure if you'll get it, but meh, I think they're great.