Tegan and Sara have taken their time growing on me.  There have been some hits, like "Back in Your Head" from The Con, and "Walking With A Ghost" and "Speak Slow" from So Jealous.  And some misses.  Their new album Sainthood came out a few weeks ago and the first single "Hell" has a video.  Here they are performing the song on Conan.  Tight performance.  
Their previous album, The Con, is available on emusic, but their new one isn't. Did they switch to a major or are they still on an indie that wants to grab as many sales as possible from iTunes first?
A few more tunes from the new album are up for streaming at their myspace.
Photo from teganandsara.com.
