Need suggestions for affiliate program

Do you know any affiliate programs that would be a good match for niche like this tapoutknockout.com ?

Comcast/Verizon HD/sport package ads maybe?

Where can I get more infos about those ads?

Try the clothes industry.
Also more related would be sport equipment. There are some advertisers with big affiliate networks ( cj, shareasale, etc ). Join them and after that search for appropriate programs.

Have you tried content locking? This site looks like it has some pretty unique niche videos. I think users would be willing to complete an offer to access all of your content.