Genshiken, Seitokai no Ichizon Recommendations
A colorful bunch of students (high school in Seitokai, college in Genshiken) who spend much of their time in a clubroom. Slice of Life comedies with plenty of parodies. Genshiken is a lot more subtle, though.
Both stories center around a club who's members spend most of their time in the club room. They both have a slice of life easy going atmosphere with light humor added in. Seitokai no Ichizon is jam packed full of parodies where as Genshiken is jam packed full of stereotypes for otakus.
Both deal with day-to-day situations of a circle of friends. One is 'otaku' club, other is student council.
Atmosphere and comedy is similar in both and they should provide similar levels of enjoyment.