I know that JMS and O'Hare got along though. JMS has specifically stated that he would have no problem working with O'Hare again in the future if that opportunity would arise.
True on both instances.
I thought he did a very good job in the "War Without End" 2 part episode and the character of Sinclair/Valen was a fascinating one.
Well, if we're going to go technical (btw, the fact that I'm still a B5 nerd 11 years AFTER the series ended is amazing to me), its a 3 part episode:
Season 1, Ep. 20 - Babylon Squared
Season 3, Ep. 16 - War Without End, Part I
Season 3, Ep. 17 - War Without End, Part II
