Level alchemy and enchanting and you can do crazy things like this:
[You must be logged in to view images. Log in or Register.]
Not that that makes the game any more fun. Completely breaks the game.
And level conjuring so you can have bandit chief and bandit marauder permanent zombies to do your bidding, plus Aranea as a kickass mage follower if you don't go the pussy route and get the black Azura's Star.
[You must be logged in to view images. Log in or Register.]
I haven't played Skyrim over a year now.
(holy shit those screenshots are huge. I forgot)