Games that force you to spend lots of time on filler content and chores.
Along those lines, I'll add grindy content within DLCs. Case in point, I was playing NFS Heat earlier this year, and the version I played came with a DLC that includes a new car along with new content. New content should normally be a cause for celebration, but when that content consists of grinding out to certain tasks in order to unlock a new tier of activities to unlock the next tiers, it starts to feel more like an insult when you consider people have paid for these things.