What anime characters would you want as a teacher and for what subjects? This isn't restricted to characters that are teachers, but any characters at all.
This is my list for today, though they are mainly taken from recent anime, one is from the good ol' days:
Eru Chitanda from Hyouka - home economics
Houtarou Oreki from Hyouka - Logic
Satoshi Fukobe from Hyouka - History
Mayaka Ibara from Hyouka - Art
Fuyumi Irisu from Hyouka - Business/Management
Wakana Sakai from Tari Tari - English
Sawa Okita and Konatsu Miyamoto from Tari Tari - Muaic and Dance
Taichi Tanaka - Physical Education
Atsuhiro Maeda (Wien) from Tari Tari - Wrestling
Ayuko Oka from Mysterious Girlfriend X - Math
Nyarko from Haiyore! Nyarko-san - Science
Erica Blandelli from Campione - Mythology
Mizuho Kazami from Please Teacher - Sex Ed (Please!!!!)