We all know by know that Brad Paisley loves the element of surprise. He is notorious for pulling pranks on fellow tourmates. Most know the prank is coming, they just never know when. This time around Brad didn't pull any pranks and it didn't even involve a tourmate. Last night at Carrie Underwood's show in Nashville, Brad made a surprise appearance during the song "Remind Me" the duet he and Carrie normally sing on.