Day 15 D&D 30 Day Challenge - Favorite Monster Undead

So many choices, I wonder what everyone is going to pick? Skeletons, Vampires, Zombies?   Personally I think I'd have to go with a Wight, as there just such bad asses, in basicfantasy/SRD they can do a Energy Drain (see below).  I suppose I should give more reasons that this, but I honestly can't think of too many.  I like the idea of throwing something dangerous at the hero's once in awhile rather than everyday meat like Skeletons & Zombies.

Sometimes characters are exposed to energy drain from 

undead or evil magic.  Such energy drain is manifested in 

the form of “negative levels.”  For each negative level a 

victim receives, he or she suffers a semi-permanent loss of 

one hit die worth of hit points and a penalty of -1 on all 

attack and saving throw rolls.  The victim may or may not 

be allowed a saving throw to resist the effect (depending 

on the specific monster type). Healing and Rest 

Characters recover 1 hit point of damage every day, 

provided that normal sleep is possible.  Characters who 

choose full bedrest regain an additional hit point each 

evening.