Singleton had an INT for a TD a couple of years ago as well, and I think Roy had an INT/fumble recovery(Can't remember which) right by the goal line that he scored with.
Roy hasn't scored a TD since that 84 yard int return in his rookie season.
Both Singleton (you know, the OLB that was cut in training camp... oh wait) and Mario Edwards scored TDs in 2003. We had zero returns for TDs last year (no defensive or special teams returns for TDs).
That Singleton INT was Monday Night in 2003 against the Giants where Cundiff kicked the game winning field goal after Quincy Carter hit Bryant on the sideline. That was the game Cundiff kicked 7 field goals, I believe.