My workout follows the push/pull/legs routine with a little mix.
Tuesday - Chest and Triceps
Wednesday - Back and Biceps
Friday - Legs and Shoulders
I have experimented with different layouts and this routine works very well for me. It also gives plenty of time between workouts so they dont conflict with other muscles and also have time to heal before the next workout. Everyone is different so its best to experiement to see what works for you.