“Potential Energy” is episode ten of season two of The Flash.
Babylon 5 – And the Sky Full of Stars
“And the Sky Full of Stars” is episode eight of season one of Babylon 5.
Supergirl – Human for a Day
“Human for a Day” is episode seven of season one of Supergirl.
Babylon 5 – The War Prayer
“The War Prayer” is episode seven of season one of Babylon 5.
Arrow – Dodger
Babylon 5 – Mind War
The Flash – Running to Stand Still
“Running to Stand Still” is episode nine of season two of The Flash and the mid-season finale.
Babylon 5 – The Parliament of Dreams
“The Parliament of Dreams” is episode five of season one of Babylon 5.