Sorry, Flame, for the insult, but I was in an annoyed mood. So we're cool then, right? Okay.
Now, Famine, I'm surprised you don't like the idea of shocking an asteroid ooff of its imminent path of destruction. I've seen snows about the subject about 20 times on the Discovery Channel. I'm not sure how far away they would detonate the warhead(s), but the idea is to have minimal damage to the asteroid and to have the shockwave sort of whack it in the back of the head to get it to move. Of course, these shows and this idea has mostly been in repsonse to the idea of a "doomsday asteroid"--the big one that would kill everything. Again. Americas current ICBMs have quite the range and would be able to get up to very high speeds in a short period of time. They could then glide through space and explode a million or so miles out. The moon is about 240,000 miles away, an it only took us 3 days to get there in the 60s, so that would give plenty of time to say goodbye to family and friends. I wonder exactly how far they're planning to shoot these rockets, though.
Anyway, I'm pretty sure those scientists know what they're doing, and it makes uber-sense, so I think it'll worl just dandy. We should test it, though. Maybe not.