This isn't from a good fic but I will never ever ever stop laughing at "then he shot a beam from his paw which the rat teleported away from", dropped in suddenly with deadly seriousness three chapters into a story which has given every indication of being in a setting in which magic doesn't exist.
Thirty Hs is an admitted trollfic, can it be counted as "good" in that it did what it set out to do? Because I can recommend most of it here.