BATMAN!!

Buddy-Cop case episode where Cas and Angel are the awkward non-humans and bond over being brooding weirdo losers who don’t fit in.

Sam and Fred nerd out while researching and find out they both have a history of being trapped in a hell dimension.

Gunn and Dean talk weapons and get super excited when showing each other their hand-made monster fighting contraptions.

Lilah and Crowley hit it off immediately and go have marathon sex in her swanky apartment - we don’t see them for the entire episode.

Wesley and Mary have immediate and obvious sexual tension but they never act on it outside prolonged, intense eye contact whenever one of them drops an offhand one-liner about how dark their past is

Hiccup x Astrid and Merlin x Arthur are literally the same ship in different fonts

Merlin and Hiccup nerding out about dragons while Astrid and Arthur kill something

Gwaine and the twins.

Morgana and Dagur being evil together.

Fishlegs teaching an eager Elyan how to make gronkle iron.

Gwen getting all the dragons to love her.

Heather and Leon bonding (idk I just think they would be friends)

Snotlout would keep challenging Lancelot to duels while Lancelot desperately tries to avoid him.

Also just the knights + Gwen, Merlin, and Arthur getting their own dragons :)

Arthur gets a monstrous nightmare

Morgana gets a razor-whip

Gwaine has a thunderdrum

Gwen has a stormcutter

Percival has a gronkle

Lancelot would have a deadly nadder

Elyan also gets a gronkle

Mordred gets a singetail

Leon with a rumblehorn

and then you have Merlin