2 Tips for Jaejoong fans watching Jackal at the theater:
(1) In the beginning, don't be too absorbed by the screen and listen carefully to the song being played. You'll hear one of the Jackal OST songs that Jaejoong participated in!
(2) Don't leave the theater as soon as the film ends and keep your butt in the seat until all of the ending credits have rolled out. Appreciate another one of Jaejoong's Jackal OST songs in the big sound of the theater~!
Source: 핫케쿠 of @DC_Jellery http://j.mp/YPVl2Y