Nothing can beat that first fight. Not knowing what to expect, having never fought a dragon before. Hearing The One They Fear start to play as that giant lizard starts to tear up the watchtower with dragonfire. It felt so epic charging into his face, greatsword in hand when he lands, right face to face with him.
Now as I've killed too many dragons to count, they're just tedious. Unless a Revered/Legendary/Serpentine shows up--which is pretty rare--I just feel it's a chore. Especially when they attack towns (Dawnstar is the WORST with dragons showing up just as I fast travel there.)
What did you guys feel fighting your first dragon ever?