Fans who loved Michael Weatherly as Tony DiNozzo on NCIS have followed him over to Bull, on which he plays jury analyst Dr. Jason Bull. But how easily can they tell the difference between the two characters? (Spoiler: It's more difficult than you might think.)

Sure, DiNozzo was an NCIS Special Agent, trained in interrogation techniques and catching bad guys. Dr. Bull is an expert in trial science, possessing an almost psychic ability to see inside the hearts and minds of potential jurors, and predict how they will rule on a client's guilt or innocence.

TVGuide.com put together a little quiz to see just exactly how die-hard Weatherly's alleged die-hard fans are. Check it out to see if you can identify which quotes are from Tony DiNozzo and which ones are from Dr. Jason Bull.

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NCIS airs Tuesdays at 8/7c on CBS; Bull Tuesdays at 9/8c on CBS.

(Full disclosure: TVGuide.com is owned by CBS.)