Wikipedia says post-punk is a genre that 'retains its root in the punk movement but is more introverted, complex and experimental'. So here's two songs that fall into the post-puck genre for all the complex introverts out there to experiment with. Both the tracks are available for free download at Epitonic. Click on the song name to download, or the band name to go to their page on Epitonic, so you and listen first and read up a bit on the band. To be honest I don't listen to this style of music much in normal life, but I do while running/biking/gym-ing and these two songs aren't quite as hardcore as other post-punk songs.