 If you liked
Haiyore! Nyaruko-san
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 ...then you might like
Choujigen Game Neptune The Animation
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What really struck me as similar about the two was how they both pretend to be serious for about 10 seconds before going 'screw that' and being absolutely hilarious, Even the rare times where they get somewhat serious are filled with jokes.
The other big part is the amount of references used in them. Haiyore! Nyaruko-san has even more of them, aye, but in both anime one can spend quite a lot of time trying (and failing) to find all the references.