Here's my problem with DLC: They make the people that already have the game pay for it, but if you buy the game after the DLC comes out, they usually include it.
Like L4D and Crash Course. I bought L4D for (on sale for $7.50, but it was down from the price of...) for $30, what Valve was charging before Crash Course came out. Did I buy L4D? Hells yes. Did I buy Crash Course? Hells no. Did I get Crash Course? Hells yeah.
Basically, they're punishing people who already own the game. If people who buy the game after the fact have to buy water, then fine, but don't bundle the game with the DLC that other people have to pay for.
Edit: Crash course was free on PC. I'm sure they bundle it with the 360 version now, though.