[font=Arial Black][color=blue]Lesson Learned:[/color][/font] Seitokai no Ichizon is all about references and parody. :eng101:
That being said, Lucky Star vs Seitokai no Ichizon:
Image courtesy of www.akibaos.com.
P.S. The second episode of Seitokai no Ichizon did some advertising for the magazine Nyantype. Not sure if it has already been mentioned.