I've been game-hopping like crazy, mostly because good deals are so frequently to be found these days... lately, it's been, oh, let's see... still some GuildWars II, The Witcher II, Crusader Kings II, Stronghold 3, Prince of Persia, sometimes Endless Space, Left4Dead II, and now and then I even get the itch to go back to Diablo III, which says much about how "awful" that game really is, I think. Oh, and every now and then I also enjoy a few rounds of Elder Sign, for some atmospheric quiet time, although the game can be so damn difficult to win.
Still unfinished in my library: Deus Ex: Human Revolution, King's Bounty: The Legend, Splice, Europa Universalis III, Heroes of Might and Magic V, The Darkness II, The Settlers 7, Tomb Raider: Underworld, StarCraft: Wings of Liberty, Velvet Assassin, and Trine 2, which got way too frustrating at some point.
And yes, I'm easily bored.
I will say that some games have held my attention more than others—the Witcher II was certainly among them, as well as the brilliant Crusader Kings II, and after having received a hearty round of patches, Stronghold 3 is actually very enjoyable, too.