Im currently on a lvl 37 character, ive done the main quest, all expansions, and all faction quests. Is there anything else left to do on this character, like any really awesome side quests?

If there is some notable side quests, could someone list them, and if you could say where I can start them.

Ive thought about just starting a new character, but for some reason I cant stick with it, I usually end up going back to my main.

Quests are everywhere!

ie.
Daedric quests.
Mazoga the Orc.
Shadowbanish wine.
Finding Nirnroot.
Ghost ship of Anvil.
Shadow over Hackdirt.
Potato Snatcher.
The Collector.

There's a group of sheep smugglers around Anvil, see if you can find them and stop them!

Search for the legendary helmet Fin Gleam!

Help a famous painter out of a tight squeeze!

Obtain vengeance for a farmer over his wife's death by goblins!

Discover the secrets of the legendary Oghma Infinium!

So much to do, so little time!

Ghost town?