The foreshortening looks okay to me on all of them, except for the marching/running one. (VileTerror called it running, but I think it looks like marching. Whatever.) One of those legs needs to be bent; I'd say whichever is in front, because making the front leg straight looks more like a leap, and people who run by leaping look really funny. (I tried this out.) If he's marching, his legs look fine, but his torso may be tilted a little too far forward. Also, the pant leg on that front leg is a strange shape--I don't think you'd be able to see inside it that well. This is a case for the mirror, tho, because I don't know exactly how it should be. Something feels odd about his arm/arms...I think they're too close to his side. If he's running, his right fist should be up higher, as should his left elbow. If he's marching, it's probably okay, but maybe still a little odd because his right forearm is coming straight out.
Those are indeed some might awesome toes.
On the pointing picture, the hand poses look a little stiff because they're contrived. Bending all my fingers that far hurts my hand. Use your own hands as models when you're drawing just to see what posey-pose stuff isn't quite physically possible.
On the walking picture, I'm not sure if the back foot would be visible; if it were, I'm not sure it would be so low down (since it's farther back). Soap is right about the notes.
That's it! Everything else looks great! You really might make people mad at you, posting good stuff in the help forum.
When is your comic starting again?