Man, Brennan's a great nemesis for Michael. I love that Michael can't fool him the way he would others since they're from the same world. Michael has probably had to work with a lot of Brennan's when he was a spy.
I also like how Burn Notice strives to make everyone human, with the way it shows Brennan has a family that he loves and provides for. Its like Lord of War(The shockingly good Nicholas Cage movie where he plays an arms dealer) as a TV character.
I'd like to see Brennan as an ally for Michael one day, that'd be neat.
Cameron Hughes