I kinda wrote a Matrix parody once... I posted it in the Vector forums.
It's really long, and I don't know if you'd count it as a song, due to a lack of chorus and spoken word style. I won't report it here, but I'll post a link to the forum thread.
Use Evade Combat - A Parody of "Wear Sunscreen"
http://mxoboards.station.sony.com/matrix/board/message?board.id=vectorgeneral&message.id=2504
Agent consumeTearing apart my soulHe’s picking me apart againYou all assumeThat I have escaped doom[Unless I risk my neck again]
I don't want to be the OneI think I never choose'Cause inside I realizeI'm the one being used
I don't know what's worth fighting forOr why they have to schemeI don't know how he saturatesOr why his face’s so meanI don't know how I got this wayI know it's not alrightSo I'm killing that programmeTonight
I have no cureConfused by all the doorsI try to catch my breath againI hurt much moreThan anytime beforeWitness resurrection again
I'll do you a dealPlease stop us getting killed!!!I'll never fight again
And this is how it ends
Hope u enjoy and are inspired lol