Your back workout leaves a lot to be desired. A lot. No chins? Not even pulldowns? The deads are great! Fantastic to see you doing them. I'm glad someone does. However, rows, rows, rows your back over and over again. Merrily, merrily, merrily, merrily we do the same exercise 3 times is a row. (yeah, so it doesn't keep with the rhyme scheme or metre, so sue me.
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For one, t-bar sucks major monkey balls. I would completely eliminate it and not even stand near a t-bar for fear that it might infect me with suckiness. The regular, barbell rows are great, presuming you do them correctly, but, like the song says, why do DB rows after the other two? You've got 3 rowing movements. That makes no sense.
The back needs three(3) exercises: Deadlifts, chins and rows(preferably barbell, preferably the JS variety). That's it. Do those three in whatever set/rep scheme you feel happy with and I guarantee you see better results than with what you're doing right now. Of course, like madcow said, if you read the stickies you'll get even better results using that set/rep/program scheme instead of the one you're happy with.