It's Flight of the Conchords!
Since the internet has not been so fruitful these last few days. It's time for an emergency link.
You either know of these guys already or you don't. If you do, you'll love them already and just be happy to see these clips again.
But if you don't, well you can thank me later... If you're into it.
This is my favourite of their songs. Now you've had a taste. Try these on for size:
Rap Battle! (Rhymenocerous Vs. HipHopapotomas)
Ok, I have to stop there. I could have linked to every song from the whole dang series. It's all solid gold. Enjoy!