Not to sound like one of the nay-sayers....
...and I wont just slap you with a Zero, since these do take effort to create....
But these newer ones are loosing their bite..
By far the funnest one you Created are the original Clay animations and the First Resident Evil Clips..
My only suggestion is that you get more voice help and add alittle diverisity to it.. and take more time with the material.. sit down and write it out.. Mistery Science Theatre spent hours with a clip and pull out some funny bits.. Some of these sound like your just adlibbing as you go.. and if you that long enough its bound to get stale..
Just a suggestion, take it as you wish:)..