The book, as the title suggests, lists 101 champagne cocktails. Most of them can be grouped into a few categories- tropical, floral, fruity, and sorbet-based, with many variations on champagne classics such as the Mimosa, Champagne Cocktail, French 75, and Bellini. There are also bubbly versions of non-sparkling cocktails like the Mojito, Margarita, Old Fahioned, Daiquiri, and Mint Julep.
There are just a few completely unexpected touches, like egg white drinks, but there isn't anything that looks too outrageous. Though most of the drinks in the book are of the same format of classics with slightly different ingredients, that doesn't mean that the drinks are obvious variations- I kept finding myself thinking, "Now that's a good idea!"
I think the conclusion here is that if you like champagne drinks, you'll like the book.