This theme has it all: star ratings, player controls, track information, track art and stylish good looks. You almost want to envy it. Linux-purists may deride the similarity to iTunes former mini-player look but that'll be a non-issue for most.
I have love for BTX because it dares to a) have a unique shape and b) not display any cover art at all. It does have scrolling text (where text is too long) and can be resized without too much pixel-ation in the latest CoverGloobus.