Best of BJ was a mod that was announced on February 6, 2003, courtesy of Dugtrio17.
A handful of screenshots were released, and the list of features mainly included changes to the weaponry, with the mod totaling 9 weapons. New weapons included flamethrowers, projectile weapons and various rapid-fire machine guns. Armor was also implemented.
The project was never released, but it is believed to have morphed into a host of other of Dugtrio17's projects over time.