Sorry if you've seen this before. Evidently it's been around since 2006, but it was just recently brought to my attention. This has to go down as one of the best mashups of all time.

This mashup throws together Iron Maiden's The Trooper with The Monkees' I'm a Believer (which you probably know from "Shrek").

The track features much more interaction between the two tracks than most tracks of its ilk. It even keeps the Iron Maiden guitar solo. Give it a spin and get ready to sing all day.

As a bonus, here's Elvis meets Van Halen:

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