Can you start a sentence with "And" or "But"?? We all need this grammar lesson / Part 2

You'll dazzle friends with the grammar smarts you'll get from our second chat with Bryan Garner, one of America's language gurus. Finally, you're about to learn if you can - or can't -  end a sentence with a preposition; if you can use "like" instead of "as"; and if you can banish "whom" and "whomever" from your brain. Just wait until you hear Bryan's rant about lawyers' terrible writing. Can you guess which common five-letter word (which lawyers love) causes endless legal battles?