Actors and comedians have been mourning the loss of Harris Wittels, stand-up and co-executive producer of Parks and Recreation. The 30-year-old was found dead Thursday of a suspected drug overdose. Parks and Rec star Aziz Ansari has been tweeting about his friend, but he also posted about him on his blog:

Harris was part of that rare breed where you wouldn’t see his shit coming. His jokes were so weird, unexpected, often brilliantly dumb that they were in that ultra-exclusive club of ones that made comedy people laugh — and laugh hard. This was why Harris was such a go-to for everyone. Anyone that was ever in a writers room with him knew he was probably the funniest comedy writer out there. He was just a machine.

[via Aziz is Bored]