http://hothardware.com/newsimages/It...atch_Thumb.jpgIt's not like Blizzard to show up at its annual Blizzcon convention without a big announcement in hand, and this year is no exception. The big announcement this time around is Overwatch, a new team-based mulitplayer shooter that has the web at large making inevitable comparisons to Team Fortress 2. And with good reason, because one look at...
