Check out this mating dance of a male jumping spider (Salticidae) Apparently, if you were a jumping spider, impressing your mate requires tapping, flailing your legs and moaning! Be sure to turn up your speaker, the sound is part of the fun (and watch your cubicle mates pop in to see what's goin' on!)
Hit play or go to Link [YouTube] - Thanks MoniA!
If you haven't seen it, check out Neatorama's 30 Strangest Animal Mating Habits