I like Magickk's way, personally. I change my split every few weeks. Some splits I'll have them after chest, some splits after delts, and since arms are genetically more difficult for me to develope than other bodyparts (tall man's arms syndrome.) I sometimes will even group arms on their own day, the only problem with that is that tri's get hit on chest day, delt day, and on their own day, so I have to be careful about overtraining on those splits. (unless I put delts and chest together, wich Ive done in the past but dont like because it doesnt allow me to give shoulders the attention the deserve.) On those arms on their own day type splits some times I'll do the arm day the day after delts, so even though they get hit 2 days straignt they still have 3 days to recover before the next chest day. Ie: mon:chest/back tues:quads/hams/calves thurs:delts/traps Fri:arms.
In fact Im planning on using that one the next time I change splits. Wich happens to be next week. (I try to stick with a split long enough to milk gains from each of those exercises but not long enough to adapt and get stale. For me that equates to about 3 to 5 weeks per split.
I first realized that the arms the day after delts routine worked for me when I did max ot the summer before this past one, cuz the tris still get several days to recover before chest, and the two consecutive day hit can shock the tris in a new and favorable way as long as I dont keep it (the split) that way for too long.