Not if it's done right. It's only worthless if the single player sucks. Haven't touched MW2's campaign twice, but I still play COD4s a lot. Then I also play my N64 a ton, SNES, and NES because the games are good. Probably on par with my Xbox when they're hooked up with my playing time. Especially N64, has so many amazing games.

"Movies are completely linear, and it doesn’t detract from that medium."
The problem with that way of thinking is that movies and videogames are two very different mediums, and judging from the rest of the article you seem to be trying to suggest we should hold the same expectations of games that we do of movies, which is a simply laughable notion.

For me, replayability means that I can play a game over and over without getting bored, even if it's a linear game. The Resistance series is just amazing at making me do this. In the resistance games, there are so many ways you can get through your enemies with creative kills that its just addictive to find out and use new stratagies.

Also, just about any retro game has replayability for me x).

But I always play a game twice, and for some reason I enjoy them better on my second playthrough. Its because I've learned to accept the changes made the the game, and I've learned how to play it so I'll enjoy it more.

I'll play the Half-Life 2 campaign a couple of times a year.

COD games have a lot of replay-ability. There's just so much modes. They're not just tacked-on either. They're well done and fun to play. Example: Spec OPs survival

Thanks for the comments people it's good to see everyone's most replayed games, and that some people don't do it at all. That was the main point of the article really. How do you rate something like that?

I haven't finish U3, i bought it when it first came out. I logged in about 100 hours in multiplayer.