#1 has to be Southbound Pachyderm by Primus. That song just gets me going and lets everyone around me know that I am a force to be reckoned with. 
Then, my fun jam tune is Windowlicker by Aphex Twin.
Having my pretty beefy system allows me to be a complete nuisance if I feel the need.
Oh, and if I am REALLY in a mood, I get a little weird on people. I will pop in some Afro Celt Sound System. ANYTHING by them. Just imagine Celtic/World Drum and Bass.... ya, weird, but awesome.
Gary Noonan
'01 S/C VX / '18 Forester XT