If you like adding contents to your game then you might want to try this mod by Mike Hancho, author of Fallout: ‘New Vegas’ “New Bison Steve Hotel” and “Afterschool Special” mods. The voice acting is top notch and the story is well written as well as design.
Be sure to follow his instructions closely when starting your game if you are using other mods that alter the beginning. The main point he stresses is making sure the bandits are present before the mod can trigger and this is done by entering Whiterun. It is quite fun and fits in nicely with Skyrim though some debate whether the Stormcloaks or Imperial armies would allow for Helgen to be rebuild.