Like I said, I back Alien.

And would like to give Blade Runner a second chance (but that director's cut was less than impressive the first time).

But your using Gladiator as some sort of evidence in favor of Ridley Scott's directing skill is hilarious to me. An average film at best.

I can't speak on Blackhawk Down, as I've only seen the beginning. I have heard good things about it.

For a guy who gets his name mentioned as director in TV spots (which is what I consider a definite criteria for A-list), I am unimpressed by his work. To the point that I would prefer not to see movies that I know he has directed. I can't think of any other director who's work I would avoid in that way.