The presentation of Henry is, imo, the most engaging entrance made by any of Austen's heroes, or just about any other literary figure I can think of. First, there's the description:

"a very gentlemanlike young man... He seemed to be about four or five and twenty, was rather tall, had a pleasing countenance, a very intelligent and lively eye, and [here comes my favourite line] if not quite handsome, was very near it."

Their subsequent first conversation only makes him more endearing; and I like how it's all Catherine's PoV: "she found him as agreeable as she had already given him credit for being. [Could it be that his being "not quite handsome" actually makes him more attractive, because it's not so daunting?] He talked with fluency and spirit — and there was an archness and pleasantry in his manner which interested, though it was hardly understood by her."