I want to study the spies I encounter in-game sometimes because I need to know what thoughts lay behind those eyes. I've seen:
a spy getting blown away by the blast of a completely oblivious soldier who was just trying to rocket jump to the 2nd floor (this happens a lot more than you'd think)
a spy getting gunned down by a level 3 sentry he decided to stand right in front of when his team was rushing in (did he think being invisible made him bulletproof??)
accidentally murdering some poor invisible spy while trying to upgrade my dispenser. I just turned my mouse a smidge and whoops! there he goes
a spy trying to trickstab me trip and fall down into the lake of man-eating crocodiles
getting jumped by 3 spies in a stairwell who couldn't even hurt me because their hitboxes kept eating their stabs and NONE of them bothered to use their gun
a spy who just wouldn't stop trying to trickstab me and was jumping around like a damn rabbit hoping I'd jump into his arms to the point I just walked away
Majority of them were BLU spies btw, must be something in the water over there