Fun if you're desperate for more Oblivion.
Um, the voice acting is excellent. Sheogorath is by far my favorite Oblivion character. Sadly the expansion really doens't have that many new quests. There are a few in each city, like 5 in each which is quite lame. The main story is more enjoyable than Oblivion's main story, but it is jsut as short-if not shorter.
My biggest gripe is, not suprisingly, the scaled lvling.....it just completely ruins the game. If you're a fan of Oblivion and are interested in playing it more, wait until OOO or anything conversion mod encompasses SI then buy it, you're sure to have a good time. 8)