70. "Speak Now" (2010)
In real-life weddings, the preacher hardly ever invites the groom's ex up to interrupt the ceremony. But if you're a fan of Tay in stalker mode, this is priceless – crouching behind the curtains in the back of the church, waiting to pounce. "Horrified looks from everyone in the room" – you don't say.
Best line: "It seems I was uninvited by your lovely bride-to-be."