I consider Saturday the start of my split so...
Sat-Chest&Tris
Sun-Legs
Mon-Off
Tues-Back&bi's (if i still have the energy, if not move bi's to thursday)
Wed-Shoulders
Thurs-Cardio and abs only (Biceps and cardio if I didn't do them with back)
Fri-Off
What I like about this is that it gives me the flexability to have either a four OR five day split depending on how much rest I need, and it's structured as such that nothing effects another body part's workout. What I mean by that, is that for me legs take a lot out of me even though I don't go balls to the wall on them anymore, hence the day off after. Back done before shoulders so doing rear delts doesn't effect back workout. If I do back and biceps together followed by a shoulder workout the next day I am wiped out, but I then have two days off from weights. One becomes a cardio session 45-60 minutes and the other is a complete day off. Sometimes I get bored/ stale so I'll throw in some different two week cycles of either four days on one off, push/pull/legs, or upper/lower&back/off/repeat.
In the end though, I always go back to the above split cuz it's worked best for me.