Watching NBC is bad enough, but visiting nbc.com? That’s an infection:
[T]he NBC site is currently compromised and blacklisted by Google. Anyone that visits the site (which includes any sub page) will have malicious iframes loaded as well redirecting the user to exploit kits (Redkit).
Worse, you’ll also get actual NBC content.
Addendum: Doug Ross comments: “If it turns out the Red Chinese hacked NBC’s computers, one obvious question comes to mind: How would we know?”