Thanks! How do really good photographers get all of their subject in focus at like f1.8 and such? I've seen a lot of nature photograph and it'll be of a large bird or other subject, and the whole animal is in focus, and it's at an incredibly wide open aperture.
As for the JPGs, they come off my camera at about 7 or 8 megs; without changing anything and saving at a quality level of 10 in photoshop they end up around 2.
As SecurityTheatre has stated, it's most likely creative use of lighting and shadows to create that illusion. Depth of field is related to several variables, all of which ST has also covered.
My suggestions were aimed to increasing your DOF via altering these conditions.
First, stopping down the aperture would be the simplest solution, and most people use this to control DOF. f/11 would give much more DOF than f/1.2. The price you pay, of course, is loss of light, leading you to crank your ISO, lower your shutter or require more flash power.
Second, backing up some more and/or using a wider angle (zooming out) would also increase DOF because you're changing the distance to your subject. DOF falls off with distance, so the closer you are, the faster it falls off.
Third, and this one you can't really control, is the size of the sensor. Larger sensors (full frame, etc) have shallower DOF. The T2i (I have one as well) is a 1.6x crop body, so you get a bit more DOF as it is. Point and shoots seem to have infinite DOF because their sensors are so small.
http://www.andylim.com/photo/depthoffield.php
There's a site that simplifies it a bit, but it's quite easy to see the DOF changing.
As for how things look sharp at wider apertures, I'll borrow some photos from a friend of mine who's a far better photographer than I am.
http://alucardleashed.deviantart.com/#/d4rjkph
This one was shot at f/1.4, which is a fairly wide aperture, so expected DOF would be small. However, it's at 35mm which is moderately wide, and he moved away enough to get a full body in, so that allowed the DOF to increase enough to make it appear sharp everywhere.
http://alucardleashed.deviantart.com/#/d4rjkrm
Here is another shot at f/1.4 and 35mm. However, since she is kneeling down, he got closer to fill the frame, which narrowed the DOF somewhat. In this case, her skirt spread all around her is clearly out of the DOF zone.
http://alucardleashed.deviantart.com/#/d4rjksw
This one was shot at f/1.6, which is slightly narrower than 1.4 of the above shot. However, this was at 85mm which is moderately long, and he moved in closer to only get a shot from the waist up.
Ultimately, I don't think everyone wants *everything* in focus all the time. People make use of the DOF to put only what they want your attention gravitating toward in focus, with the rest stirring out of focus. If everything was always in focus, it tends to become very confusing as now there are way too many elements that are in focus for your eyes to settle on.
I personally think that duck photo is fine, dof-wise.