After the best game of the year thread, I felt compelled to start this one.

So, people's worst games ever that you've owned.

I give you Megarace-
http://en.wikipedia.org/wiki/Megarace
One of those games that came out when CD-Roms were new and exciting. It involved lots of annoying cutscenes featuring some guy in a sports jacket, and you drove a car around a prerendered track. It was also ridiculously hard at one stage.
Actually it probably wasn't the worst game ever. But it was pretty annoying.

I played transformers on xbox a while back, I remember that being terrible, it was so clunky, and in the virtual city cars would just crash into each other at junctions as the AI was so bad.