I actually put a lot of time and thought into what tune I use as an intro for a set.
Some of my faves-
Shimon - Hands Up
Fresh - Scream
Kenny Ken - Everyman (Modified Motion remix)
Subfocus - Special Place
Modified Motion - Stranger Things
Pendulum - Axle Grinder
Evol Intent - Middle Of The Night
Here's a good one....Reprezent (Chase & Status) rmx Double Dropped with Barracuda (M.I.S.T) both tunes sort of talk to each other ... plus Nero's energy with Ant Miles's Spirit Chaser proper runnin BOH!