Ever saw a CD explode? No? Here:

Worry not though, your cds/dvds won’t start exploding out of nowhere.
The guys on this video managed to explode this one by attacing it to a dremel (mini-drill) and making it rotate at 35000 rpms.
Also: Don’t ever try this at home. This jackass wannabe was VERY lucky not getting plastic shards in his face, eyes, arms or whatever…