MJ's work is pretty universally known, so it's easy to assume that everyone here has at least one song of his they enjoy. Plus, his work is so diverse that we can get a sense of what your music preference is in general.
Mine is Baby Be Mine from the Thriller album.
<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/c6DVMImlOnU&hl=en&fs =1&"></param><param name="allowFullScree n" value="true"></param><param name="allowscriptacc ess" value="always"></param><embed src="http://www.youtube.com/v/c6DVMImlOnU&hl=en&fs =1&" type="application/x-shockwave-flash" allowscriptaccess="a lways" allowfullscreen="tru e" width="425" height="344"></embed></object>