Lessee...
Ruined Tail's Tale (Excellent Argonian companion mod in the vein of your typical Bioware follower)
Thief's Arsenal (gives you the tools of Garrett, basically)
Thievery in the Imperial City (... and quests in which to use them)
Koyama's Journal Mod (if you're into heavy duty roleplaying)
Mud and Blood (transforms Bravil into something out of a gothic fantasy)
I had a bunch more but they're eluding me; it's been a while since I've played Oblivion.
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It's hard work living as a sloth, but he finds time to relax.