My favorite Lan scene would be in TGH. When Rand is summoned by the Amyrlin, Lan preps him in a few borderlander ways in order to give Rand a chance in facing whatever comes. And then right before the door closes he whispers, "Tai'shar Manetheren!" A little confidence boost, a reminder of who Rand is and where comes from. That little bit goes a very long way for our favorite Dragon-to-be.

For Moiraine, the scene where she swears to Rand in the FoH will always hold a special place for me. It's right then that Rand sees that she is committed to helping him and not controlling him. From then on, they both begin to see each other as friends and not adversaries - and a little trust begins to flow in both directions. Too bad it would be a little too late.