Olivier Marthaler is a good friend of mine, also a big Nepenthes fan. He grows more than 60 different species and  some of the rarest. He's been in the Philippines  and  Indonesia where he saw and discovered some Nepenthes (eg Nepenthes mira)).

Some plants in his collection are absolutely fascinating ! He owns a mature boshiana, which produces awsome pitchers :

A young macrophylla pitcher

N.aristolochioides grown from seeds

N.bicalcarata

N.mira, that he discovered with some german friends.
Plant grown from seeds

N.adnata
He owns a forest of that species, with male and female plants that flowers regularly.
I find that species quite interesting. It's got unique leaves and the upper pitchers as nice too (right pitcure)