I guess I never thought about it too much before, but really, Alliance male dances are just sort of... there. We have a bunch of old standbys. The Saturday Night Fever disco, the vaguely Cossack Dwarven dance, the old Michael Jackson Night Elf dance and that weird... thing Gnomes do.
My favorite though, is the newest one, the Draenei dance. Tunak Tun was an old nerd favorite of mine, and was actually pretty popular on the Tarew Marr server community back when I played Everquest. It's dynamic and joyful without being as unsettling as the Gnome dance or nerdy as the human dance. In fact, when we finally get dance studios, I may switch some of my non-Draenei guys to it, if possible.
What about you? What's your favorite?