I find i have no energy left after doing a propper back or chest work out to then do bi's or tri's. My week schedule is:

monday....chest

incline, flat and decline bench press 6/1/6 reps of each
incline, flat and decline flies (dumbells or cable crossovers depending on my mood) 12/6/12
pullovers...3 sets of 6 to 8 reps
close, med and wide press-ups...at least 12 of each

wednesday...Back

warm up on the rowing machine for 3 mins and stretch then
Deadlifts...one good warmup set, then 6/1/6 reps
good mornings... 3 sets of 8
t-bar rows...3 sets of 6
weighted chin-ups... wide, med and close as many as i can in each set.

friday... Shoulders and tri's

Seated barbell press 6/1/6/1/8
barbell shrugs 2 sets front grip, 2 sets rear
upright rows 3 sets of 6 to 8
seated bent over lateral raises 3 sets of 6 to 8

standing tricep extension (with one dumbell) 3 sets of 6 to 8
lying tricep extension (ez bar) 3 sets of 6 to 8
weighted dips 3 sets of 6


sat...legs and bi's

Squats... 6/1/6
barbell lunges... 3 sets of 6
calf raises... 3 sets of 6
seated leg extensions (machine) 3 sets of 6.

hammer curls.. 2 sets of 6 to 8
ez bar on the preacher bench... 2 sets of 6 to 8
21s with the olympic bar not the ez

this way im hitting pretty much everything except abs and i get 3 rest days a week. works for me, im 6'3" and now 13st 4 of lean muscle. 7 months ago i was hovering around 12st.