Lafiel on 01 February 2015
I really like upbeat openings, so these are among my favorites (mainly for the songs, so I do prefer long versions, but I'm linking the TV size OPs here):
D.Gray-man OP3 - Doubt&Trust https://www.youtube.com/watch?v=9genmkeG5iY
Busou Renkin OP - Makka na Chikai https://www.youtube.com/watch?v=I9usGOXqguc
Boukyaku no Senritsu OP - Will https://www.youtube.com/watch?v=XlWOZgxrldM
Uchuu no Stellvia OP - Asu e no brilliant road https://www.youtube.com/watch?v=DZ0FP-1rEvY
but ofcourse I also adore the opening of the anime my avatar is from
Seikai no Monshô OP - Seikai no Monshô https://www.youtube.com/watch?v=YJEBcXIqNp0
