I really hate the length of Demos today.
In the majority of game demos I've played lately I've only gotten a 30 minute play from a game, they dont even give me any of the juicy stuff.
Example 1:
Overlord:
Right after the cool training, and lighting the halflings on fire, I hear all this jazz about bigger minions and such.. I wanted to at least get to check 'em out, or go into town, past the GIANT PALISCADE.
And the god damn demo took 2 hrs on DSL to download.
The only demo that I've played and really gotten the feel for it like I should is MoH: Airborne, but maybe because I've played MoHhA. But they still cut it off at a point I didn't like. Even though it was good marketing. "Those are Germans they actually know how to fight unlike the i-tods!"