Near, especially in a phone conversation; even better is the part where Matt comments that he seems to be getting better on the phone, and he's genuinely flattered.
Matt also qualifies. His first encounter with Misa in particular.
Ascended Extra: Matt. In canon, he had about sixteen panels, and one scene in the anime. Here, he's part of the main cast, and plays a crucial role in the plot.
For Want of a Nail: If L had come up with a backup plan and Rem hadn't killed him. Actually, it's more like "if L had faked his death at the exact moment that Rem and Misa had both written his name in their notebooks simultaneously.