.hack//Gift

Both are parodical comedies that come from large franchises and both require knowledge of these franchises to fully enjoy the jokes. Both also make fun of the characters dying. 

Not Laugh out Loud Funny, but still humorous. Bizarre character designs that may not appeal to everyone. 

Both are OVA's with a very similar random style of gag humor. Also both are parodies of their original series which are quite a bit more serious.  

Unlike its parent series, .hack//GIFT has a shallow, disjointed, random, quirky style driven more by silliness and entertainment value than plot, which can be seen in some sections of Furi Kuri. The latter has a more complex overarching plot, but when that's removed they're quite similar.