I once read that the term "said-bookism" comes from little books containing lists of synonyms for the verb "said". While "said" often comes off as plain and simple beside exotic euphemisms, in general it's a better choice. Nearly invisible to the reading eye, it focuses attention on the dialogue rather than how it's delivered. It's also far less likely to have as many amusing connotations as some of the said-bookisms in this list...
“What the hell are you doing?” Luc barked.
Shayla Black, Decadent
The word "barked" makes me think of the character doing a dog impression. Unfortunately, the above line is from a sex scene, which is really the last place I needed to imagine a dog.
I don't have an example for this, but it enjoyed a brief honeymoon in romance novels from the eighties. It's probably meant to indicate that the hero (or more rarely, the heroine) is speaking in a husky voice, but it's more often applied to ears of corn. Thank goodness it didn't catch on; otherwise the next logical said-bookism might have been "he hoarsed" or "he throated".
"Oh, Lucius Cornelius!" whinnied Gaius Lusius.
Colleen McCullough, The First Man in Rome
Gaius Lusius is supposed to be a stereotypical gay man in a very heterosexual army (don't ask, don't tell), but the narrative was doing more than a good enough job of portraying him as such before this speech tag. I'm not even sure how one whinnies dialogue. It makes me wonder if Black Beauty ever whinnied anything.
"Snape!" ejaculated Slughorn.
J. K. Rowling, Harry Potter and the Half-Blood Prince
Ah, the word that launched at least one piece of slash art I'm aware of - and no, I didn't save the link.
I read this in a review by James Blish (writing as William Atheling, Jr.). The word "whispered" is one of the few that I wouldn't hesitate to use instead of "said", but I'm not sure whether a half-whisper is an even more quiet whisper or if it's describing a voice that begins quietly but rises to a normal pitch at the end. What's the other half of a half-whisper, anyway? I feel as though I need algebra to work it out.