I just came across this site: Thomas the Dank Engine. It contains links to mashups of the Thomas the Tank Engine theme tune with hip-hop classics. Oh yeahhhh!
Here's NWA's "Chug the Police":
NWA's "Tanksta Tanksta":
Eminem's "Not a Train":
And many, many more! Call now! Operators are ready to take your call!
Hope it gives you a chuckle!