You can watch Louis CK's new stand up special Hilarious on Epix.com
"Ladies and Gentlemen...
My Standup concert movie, which has been playing in theaters in select cities and nights for the last week, is on EPIX, available to stream online. Go here:
http://www.epixhd.com/invite/ get an INVITE CODE and you can watch it for FREE for the next week. Please tell a lot of people."
from his site:
http://www.louisck.net/
If you have the channel on your tv, you can just choose your provider and sign-in through their site and watch it too.