IMO, a notable
dance DJ keeps surprising the crowd with fantastic mixes/blends, and doesn't let a track simmer for too long. They would also include plenty of build-ups and breaks; but not too many, otherwise it's pretty irritating having to relax and psyche yourself up all the time! And they would never,
ever mess up a mix with a rewind; as good as the opening to the track is, they're just going to wear off it's magic too quickly! Though I supposed they'd need to get rid of it quick, in order make space for the next lot of tunes to come out, and keep the mixes fresh.
DJ's that give mixes an interesting touch are also good; mixes by Richard James (Aphex Twin) are always of a unique and interesting nature. At Glastonbury 2003, he start his 2 hour set at approx. 90 bpm, and finished at around 180 bpm.
Amon Tobin is also another creative DJ! Check out
Solid Steel Presents: Amon Tobin Live to hear what I mean.