Tome of Unlife
This is one of the few books that Bethesda made a unique cover for. My version of this book has a skin-like cover with blood pulsing through its veins. The animation is very subtle and I don't think anyone would find it distracting since you have to be staring at the book to even see it. The animated version is installed as the default, but you can choose to install an alternate version with no animation or to keep Bethesda's already wickedly cool original. Here are sample images:

The animated version is the default, so you don't need to do anything special to use it.
If you would rather use the unanimated version, move the file "Tome Unanimated.7z" from the folder "<Oblivion>\Data\Book Jackets Alternates" to the folder "<Oblivion>\Data" and extract it there. If you are asked whether you want to overwrite existing files, click Yes or OK.
If you would rather keep Bethesda's original, "Tome Bethesda.7z" from the folder "<Oblivion>\Data\Book Jackets Alternates" to the folder "<Oblivion>\Data" and extract it there. If you are asked whether you want to overwrite existing files, click Yes or OK.