I've only heard McCreary's work on BSG and Caprica. But love what I've heard so far. Aside from the percussive usual style that he is best known for, he has some great compositions. The 'Adama/Lee' theme is one of my favorites which has had many incarnations throughout the series. The one with a 'Celtic' sort of feel to it.
"Death, delicious strawberry flavored death!"