Well, that's hard to quantitise. I'll list a few:
Death Moon: Fast-paced, classically-inspired, articulate techno song from O2Jam. Probably the best use of articulation that I know of that isn't baroque.
Mellow: Catchy tune with amusing lyrics. It's also fun to play on ITG. ;]
Siege: By far my favourite song to play. Killer on the wrists though.
Drive: My favourite song that anybody here might actually know. It's by REM from their 1991 album, Automatic for the People.
How did you find me!? :O