Chuck..Northerns are EXCELLENT eating, but as Buckhunter says, they are full of small, Y shaped bones, which are a nuisance... They are, in my opinion, one of the best tasting fish...
I have learned to trim out the Y bones and although it takes a little more time to filet a fish, it is well worth it... Google it up on the net and you'll find a lot of info on removing Y bones from pike...