I've not tried either of these, but what with all the talk of ramps to change the oil?!?!
I do it without jacking the car up, if it's just the oil :)
Yeah, it can be done if you're crafty enough, and it sure makes it a lot faster too - pull plug, go in, wipe it off, come back out, stick it back on, refill. This would be REAL easy if GM had put the drain plug to the front (I suppose this is a bad idea, somehow, though)
I guess having that funny black plastic thingie under the front of car fall off a few months ago helps, though. And cardboard or a carpet under the car so you don't get garage gunk in your hair.
I have an aversion to ramps ever since I drove a bit too far up a pair a few years ago :(