Twin! Of course I have to do your poll!
I picked "The Phoenix" because it was the turning point for the series and allowed Lois and Clark to move toward starting a romantic relationship.
I love Clark actually having the courage to ask Lois out, her fears about what will happen if they start dating -- and eventually warming up to the idea -- and of course, the "almost first date" while they're on the stakeout. Never before has a medicinal tummy rub been so sexy.
