Try this on your 5 minute warm ups, it's really good because it contains lots of different tempos. And of course it's also fun! I've also tried running to it and again, the different tempos can really get your calves going!
Happy running and... be Italian
youtube.com/watch?v=foqgaD6...
Btw you can easily convert this into an audiofile for your i-pods/smart phones.