Dunno if it will be considered "done well" but there's a Norse chapter in Frost & Fur, out now on bookshelves. Here's what it contains:
* Three new classes: Godi (pagan priest), vitki (runecaster), and voelva (shamaness)
* Five new prestige classes: Artificer, berserker, glimumann (Nordic wrestler), jomsviking (Norse mercenary), and leech (herb healer)
* Two skill clarifications
* One new armor, the byrnie
* Four kinds of shelter
* Eight new kinds of transportation
* 13 different weapons
* Eight new magic items
* Six new monsters, including: linnorm, draugr, haugbui, ketta, nykur, and trow
* 38 new feats, including galdralag (cursing), glimustaoa (rushing an opponent's weapon belt), stigandi (a special combat stance), strandhugg (the viking raid), and svinfylka (boar snout maneuver)
* Five new spells
* 60 runes for use with the vitki and skalds (bards) -- runecasting!
* 25 herbs for use with the leech (in a Norse campaign, there's no healing clerics, leeches are it)
* 38 deities for a godi to choose from
You can read more at
http://www.amazon.com/exec/obidos/ISBN=0972819754/michaeltrescaA/