sorry, fixed formatting:

Saki:
youtube-dl www.nicovideo.jp/watch/sm29897957 -u <USERNAME> -p <PASSWORD> -o 'Pack 17/Saki/%(title)s-%(id)s-%(uploader)s.%(ext)s'

Trains:
youtube-dl www.nicovideo.jp/watch/sm29894824 -u <USERNAME> -p <PASSWORD> -o 'Pack 17/Trains/%(title)s-%(id)s-%(uploader)s.%(ext)s'

Yume Nikki:
youtube-dl www.nicovideo.jp/watch/sm29444857 -u <USERNAME> -p <PASSWORD> -o 'Pack 17/Yume Nikki/%(title)s-%(id)s-%(uploader)s.%(ext)s'

Yuru Yuri:
youtube-dl www.nicovideo.jp/watch/sm29800603 -u <USERNAME> -p <PASSWORD> -o 'Pack 17/Yuru Yuri%(title)s-%(id)s-%(uploader)s.%(ext)s'

Shit man:
youtube-dl www.nicovideo.jp/watch/sm29892990, www.nicovideo.jp/watch/sm29428523 -u <USERNAME> -p <PASSWORD> -o 'Pack 17/Shit man/%(title)s-%(id)s-%(uploader)s.%(ext)s'