Family channel, and the cooking network
The NHL Network is on channel 124 in Houston. It was added in late 2008 together with other sport-related channels that were also added to the network.
There is no ESPN NHL - the company devotes no serious time to hockey coverage.
The best NHL 12 or NHL 11 channel is 2bcproductions. They (or Johnny, rather) do GM mode commentaries, shootout commentaries, NHL 12/11 Tips and Tricks, OTP hockey night highlights, and more. You've gotta check out 2bcproductions!
It doesn't you have to buy it
ESPN NHL can be watched at sports bars such as Buffalo Wild Wings or Applebees. Also, local bars often times offer the channel during the NHL season.
WFLA Channel 8
TSN is not available on Time Warner Cable due to it being a Canadian channel. However, if you do buy the NHL Center Ice package from Time Warner. You will be able to see NHL hockey programs such as "Hockey Night in Canada" on TSN.
The 2012 NHL playoffs will be aired on NBC Sports Network (NBCSN).
Ask your TV Service provider because it varies in every city. For me, (Vancouver) it's 3 or 22.
TSN is a sports channel, so it has sports shows, NHL games, NBA games, the World Poker Tour, The World Championship of Trick Shots, and Friday Night Fights to name a few.