Well, up front you have g-money, g-dogg, and g-strings. In back you have g-funk, g-unit, g-fizzle, g-muffins, and G-Dubya. So all else being equal, you have more G's at the back.
In terms of ride quality, I would expect it mostly depends on where a seat is in relation to the center of gravity (CG). When the aircraft has a non-zero pitch rate the people farthest from the center of rotation (usually the CG) will experience the most displacement and, since the aircraft is essentially a rigid structure, the highest accelerations for the same angular velocity (pitch rate).
The CG is usually around the 1/5 to 1/3 point on the MAC of a wing. On an MD80 that puts it around row 20 out of 30 (so the people in Row 1 are farthest from the CG.) Conversely, on something like an Electra, that has a whole lot of fuselage behind the wing, I would expect the people at the back to have the wild ride.
As an aside, g loading is often a big hurdle for high-speed trains and terrain-following aircraft. As you travel faster, you have less time to change your elevation (to stay on/close-to the ground), so you have to accelerate up and down at higher magnitudes. But those are g forces that affect the entire vehicle pretty much uniformly (if some parts didn't experience the same accelerations as the rest of the vehicle, they would eventually stop being a part of that vehicle).