Many of the Doctor's brilliantly delivered lines:
EMH - "
Who would have thought that this eclectic group of voyagers could actually become a family? Starfleet, Maquis, Klingon, Talaxian, Hologram, Borg, even Mr Paris"
EMH - "
What did he ingest?"
B'Elanna - "
Just a cup of Neelix's coffee."
EMH - "
It's a miracle he's still alive"