I've got Deep Impact on vid somewhere (recorded off TV aaaages ago) but I do think that Armageddon blows it apart.

I don't give a damn about whether or not it's 'good science,' as I do enjoy a good movie. Armageddon for one thing had characters I actually wanted to pay attention to, and didn't focus stupidly heavily on the Ben/Liv romance. I loved the 'side story' about Chick's ex-wife and his estranged son. It was very nicely done.
But of course, Armageddon's greatest weapon against most similar 'summer blockbuster' movies is the score. NOT Aerosmith, I mean the proper orchestral score which took me five seconds to fall in love with. That opening flute solo is beautiful!