Episodes where you wish the doer was someone else
"Andy in C Minor":
As all fans of the show know, the "best friend doer" is easily the show's most notorious cliche. A slightly lesser-known one is the suspect who expresses disinterest in something in their first interview but, as we later see, really wanted that something, and later killed the victim over it (Karen and her kid in "The Good-bye Room", Jacob and going back to the Amish in "Running Around", George Watson living in a Libertyville home in "Libertyville"). Fitting both of those cliches, Carlos was kind of an uninspired choice for doer. A far better choice, IMHO, would've been Leah, the semi-stalker girl who later got a cochlear.
Picture this: We end up discovering that Leah got her cochlear after Andy got his, rather than before. She thought since he liked Emma, maybe he'd like her again if she could hear. Of course he doesn't, so now she's undergone this procedure, leaving her not totally fitting in the hearing world or the deaf world, for a boy who doesn't even want her. Frustrated, she clocks him in the head with the metronome. What do you think?
"Schadenfreude":
Again, best friend doer. Meh. What if it was the wife of the man had died on Steven's table? Maybe since her husband died, she wanted Steven to feel the same loss.
"Wednesday's Women":
I knew early on it wouldn't be any of the women, but what if it was the doer's sister instead?