Country and Pop Music Collaborations

Do you like when country artists collaborate with musicians from other genres?  The lines between different music genres are getting blurry, with many artists getting air play on both country and pop radio stations.  Here are a few collaborations between country and pop or rap artists:

Train Featuring Ashley Monroe (from the Pistol Annies): “Bruises”
Album: California 37

Rascal Flatts – featuring Natasha Bedingfield:  “Easy”
Album: Nothing Like This

Nelly featuring Tim McGraw: “Over and Over”
Album: Suit

Christina Aguilera featuring Blake Shelton: “Just a Fool”
Album: Lotus

What are some of your favorite collaborations?