I didn't see all of the first part, so we confine this to the second part.
5. Oh, the clichés were out in full force today, but I think I'm going to pick the two contradictory clichés thrust together by the same character, no less: First, the President says, in response to an aide saying "Sir, there are some things we just must accept we have no control over.", "I don't accept that!". Later, the President gives us a nice stereotypical "This is Mother Earth and she shall do to us as she pleases" speech, with no indication that this is the result of learning or a new-found respect or anything... he's just preaching. (Hollywood, considering you just fell into the ocean, I don't think you're in a position to be preaching.)
4. Scale issues. The satellite photos show a fault at least fifty miles in diameter and the showing it filling in with water clearly travelling faster then the speed of sound (in the air, but it doesn't really matter). The video clear shows faults that aren't more then a few miles at most in diameter. I live in Michigan. Grab a globe and look at how close the Upper Peninsula and the Lower Peninsula are. The far side of the fault was clearly closer to that, and there's many a day you can't even see across that distance because of the mist in the air... mist conspicuously absent, despite all the turbulent water, but I digress... compare that with the gashes in California. Those impossible to see across, because the farther you can see over the horizon isn't anywhere near that far.
3. "Nukes are big enough to affect the Earth." and actually prevent earthquakes. Yeah... hello, Big Number Fallacy. Nukes are big, plates are big, so they're the same basic size, right? Reality: Plates makes nukes look like child-safe firecrackers. Even if you did fuse a little rock from two plates together, the plate would shrug the fused rock apart again without even noticing, and all you'd do is slightly re-arrange which rock is stuck to which plate. If anything, the nukes would set off the quakes earlier then they might have... and even then, not because they are big in Earth terms, but simply because the slightest tap can set off an unstable system.
2. Having the ocean actually climb up the mountains. Actually, they just show the ocean following the fault line about a hundred miles into California, as if California is just a big plain like Florida, instead of the western edge of the third (I think) largest mountain chain in the world, and people fleeing from the ocean showing up at ground level. One can only conclude that the ocean has literally jumped up miles into the air, since the people clearly didn't fall that far.
And the Number One stupidity in 10.5:
1. Building your earthquake evacuation camp on top of the same fault you are evacuating everyone from. This one is #1 because it's not even a science issue, it's just a what the hell were you thinking?!?! kind of thing. Hello? McFly? McFly? Think, McFly, think!
I enjoyed it, but as I said in a comment elsewhere, it was a cartoon. I mean that in the nastiest sense of the phrase. Perfect MST3K material, and to say that about a 2004 movie is strong condemnation indeed.