One of the most iconic Nepenthes species, Nepenthes macrophylla was initially considered a form of Nepenthes villosa, then reclassified as a variant of Nepenthes edwardsiana, before ultimately receiving its own species description. It's my personal favorite in the genus.
 
This is a large rooted basal from a monsterous 8 year old plant. The photos show the exact plant for sale.