If there was already a topic on this, it wasn't in the index.
At any rate, I downloaded the demo via Steam and it's not too bad. If you're at all interested in it, I'd recommend grabbing the demo and taking a peak. You get some restriction in your area you can explore (but it's still freakin' huge) and 30 minutes to do whatever you want. You can do the missions that ship with the demo, or just run off and do your own thing. The latter is pretty awesome.
Does anyone know if Just Cause 2 supports coop? If it does, it'd be totally awesome. Especially if you could have more than 2 people playing at once. The level of destruction you can wreak is pretty impressive.
The grapple hook, the parachute, the helis, planes, cars, weapons, it was all so much fun. Not to mention how great the game looks, simply gorgeous. The only thing that annoyed me were the not-very-inspired gang missions and the typical console BS (cut scenes every time you call in the arms dealer etc, only possible to order one thing at the time so you need to call it 4 times in a row to buy 4 different items etc). But overall, totally recommended. 
So I made a line between him and the tank, and dragged him along the highway hahaha! It actually worked well for a while, until he swerved to the left side of the road and was splattered on the bumper of a truck going in the other direction. LOL.