Which plane has a 3-5-3 seating arrangement?

Of current airplanes, only certain configurations of the Airbus A380 have 3-5-3 (on the lower deck). I don't believe any other common jets have a wide enough fuselage.

However, the old DC-10, MD-11 and L-1011 three-engine widebody jets commonly had 2-5-2 configurations in coach.

No matter how you slice it, being in the middle seat of a 5-across bunch can be dismal...