Some form of garrotte would be good for sneaking.
A garrotte would be awesome. I'd like the throwing stars/knives to have higher damage (as expensive and rare as they are to buy/find, you would think they would do more damage...), or become a sneaking weapon for low-leveled unarmored opponents (I just threw a knife at a level one commoner, two knives, three... why isn't he dead yet?). I do like one handed swords, but I really use broadswords and a shield more than anything (and an axe with a shield. I trade between them). I also have a char with a mace and shield alongside his longsword, and I use the mace to deal mostly with critters. Marksman is awesome, even if my arrows sometimes disappear right out of my bow. >.> I can never find a crossbow suited to my level, unfortunately, same with bolts. I do heart my spears.
But I really like hand to hand. I had a Nord learn some (only level 40) and there was something satisfying about flooring a heavily-armored opponent just so I can beat them to death. The Berne vampires I have are even scarier with them, and I have one Temple spearman learn it so he could pretend to be an unassuming monk... and destroy any idiot Cammona Tong who thinks he's an easy fish (he's Argonian).
But yeah, flails would be awesome. Or chain whips: http://www.youtube.com/watch?v=4Qh1LlS8FFg&feature=related (ignore the music choice. Dual chains would be pretty cool to beat someone down with, since they have so much range...) Movie: Underworld