I hated T3 at first, but after a few viewings it's gotten a little better. There are a couple good parts mixed in with the bad (great ending), so I agree with the overall "meh." T2 is my favorite.
I only bring up T3, because to me, it's basically a spoof of T2. And to a much lesser degree, that's how I view Last Crusade: as practically a spoof of Raiders. Sure, Raiders had humor, but Crusade just had WAY too much. The tone was off- it just doesn't appeal to me because it isn't as gritty.
It is a good movie in its own right, but IMO it doesn't even come close to Raiders.
Raiders - 10 (yep, a perfect movie IMO)
Doom - 4.5? (though I must say it is the greatest horror movie for 12 year olds ever made)
Crusade - 6.5