Anything from the end of Issola or Sethra Lavode has a really, really good chance of being epic.
Mellar's scheme for revenge in Jhereg leaves Vlad speechless with admiration when he finally figures it out. Vlad's own solution to the dilemma Mellar poses is pretty brilliant in itself.
Teldra, one of the very few people Vlad knows who has no combat skills whatsoever, manages to disrupt a Jenoine's concentration when none of Morrolan's or Aliera's Great Weapon attacks would suffice. By insulting it in its own language.