So You Think You Can Dance is back! — the best of the dance and the best competition/reality show IMHO.
a few lines from Yeats to honor the occasion.

O chestnut-tree, great-rooted blossomer,
Are you the leaf, the blossom or the bole?
O body swayed to music, O brightening glance,
How can we know the dancer from the dance?

from Among School Children by William Butler Yeats