I've not watched much Bojack Horseman but I do know that it's littered with Easter Eggs, particularly in terms of background characters and one-off jokes. It is also, apparently, filled with heavy nods to fine art. Daily Art Magazine has compiled all those references in one spot. The references aren't exactly subtle - Warhols, Rothko's, Harings, etc etc - but it's still fun to see the real versions side-by-side with the slightly warped Bojack versions.