A primer on philosophical paradoxes that is surprisingly wide ranging for its length: more than 200 named paradoxes, according to the index, discussed in less than 200 pages. This means steaming through them pretty quickly, but it works as a nice introduction to the broad area. The attempted breezy humour the book is delivered with misses more than it lands and is, unfortunately, rather repetitively sexist in a mild but oddly dated way for a 2009 book.
I do have a new favourite paradox, the 'Silly Offer' paradox. You offer someone a million dollars if they do something silly. They put on a silly hat and do a silly dance in the middle of town. The money is requested, but you reason that mildly embarrassing oneself for a million dollars is not silly at all, but actually rather sensible, and decline to pay out. But by refusing the money, you render their dance pointless, and hence silly. So you should give the money, but if you do give it, you shouldn't, etc.