Stashed in: Lolcats!, gifs, G4!, Reaction GIFs!, Tuxedo Cats!, Gamers!
Fishtank 1, Cat 0.
Attention to detail really sells it.
Cat jump fail gifs:
This page includes an interview with the voice of Leeroy Jenkins:
CWMALLS® Quilted Down Jacket Fur Collar CW807032
CWMALLS® Leather Down Jacket with Hood CW807033