I would say The Flash Season 4. Say what you want about it, but it definitely had some strong moments like scenes from Enter flashtime, think fast, therefore i am and other episodes, (although it unfortunately had sone negative ones). The thinker is an underrated villain (when playing as neil sandilands) and The Flash, unlike season 3, wasnt trying to be like arrow (all dark and brooding) it was a bit campy and funny which definitely fits this show and concept very well