Aight OP, here's some last recs before I go to sleep:
First the mainstream duo, Hayate no Gotoku and Gintama. You're probably familiar with them so I won't dwelve, but just in case, right?
Nichijou, + Tic Nee-san and Danshi ni Koukousei no Nichijou go all out on the jokes based in a school life scenario.
D-frag and Maousama Chotto Sore Totte!, both by Haruno Tomoya are the best in tsukkomi based comedy.
Prison School has some pretty amazing shit that sets it apart from the rest, like Masochist Economics (crash comes as no surprise) and Medusas.
Dagashi Kashi which is a series of introductory chapters about japanese candy filled with snark (by MC) and trolling (By his dad and the heroine).
And lastly there's Sayonara Zetsubou Sensei A.K.A. I Could Not, For The Love Of Me, Stop Laughing Thus I Fell In Despair
I hope you have fun, see ya around.