When I had a system, it depended on what I had, lol. When I had my DD 9515, Lil John's Throw It Up was the one for me, mad windshield flex.
When I had my RL-p 18 and TC 5200 18", both in 5 cubes sealed, it was always "Bass I Love You" for the extreme low end frequencies that made people say "what the fuck? and USDA's White Girl.
*EDIT: I also played some Lamb of God and Cradle of filth to prove people that 18's can be as quick, and even quicker than 8's and 10's with all that double bass //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif