Of all the Megaman tracks on OCR, I enjoyed "It's Boss Time" the most. It's pretty simple compared to the others, but it creates the most vivid images in my mind. The gate closing down in the beginning, the fierce battle that follows, and the inevitable failure at the end. A very appropriate use of Megaman's death sfx. Another great thing is that it's the soundtrack to most all bosses, and can have many different scenerios to be played to. I suppose the main reason for liking this track tremendously is because of the nostalgia it creates*. Even though it isn't an overly unique concept, the arrangement was put together very nicely. Thank you much, Gux! Word.
I also dug "Wily Metal" hardcore.
*by the way, I don't suck. I made the bosses eat it with no sweat; I owned them. No, truly, they were a piece of cheese cake. You doubt me? Aw.