I don't know about getting cheaper cable, b/c we have never paid for it (had it free included in rent a couple times) but wanted to say depending on what sports your DH watches he might be able to find them online. Mine is able to stream games live, for free (though they have pay sites, which would still be cheaper than cable). I honestly don't know how he does it, exactly, but he can find any show that has already aired (it's how we watched Weeds and Dexter which are on showtime). someone, somewhere uploads them to the web. For sports, it's the same, but your DH is prob. like mine in that he doesn't want to wait until after the football game to watch it, so he does the live streaming thing.
We also have netflix, and use the instant play feature every day. It helps to have a bigger LCD monitor, of course, but buying one would be cheaper than paying a high cable bill every month. Also, there are sites you can pay monthly for ($10-20) that are similar to what napster was/is. Graboid is one we use, and we have been able to see movies while they are still in the movie theater. Hopefully this is legal

otherwise, I wouldn't recommend it.

Just mentioning that with the Internet, it really is possible to see pretty much anything that is on cable. oh, yeah... my DH has figured out how to send the shows to our big screen TV, either using the wii or by conneting the laptop with a cord.
Good luck figuring out a cheaper way. I can't imagine spending so much on TV each month, but I know plenty of people spend twice that amount. We don't even have comcast in our city, so the choices are even more limited and $$$.